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Institute: Institute of Experimental Physics

Anisotropy of magnetoelectric coupling in rare-earth
Anizotropia magneticko - elektrickej väzby v manganitoch vzácnych zemín
Program: SRDA
Project leader: RNDr. Mihalik Marián CSc.
Annotation:Magnetoelectric multiferroics are compounds wherein beyond coexistence of long-range magnetic and electric polar orders, magnetic and polar degrees of freedom are intrinsically coupled. Best examples are rare-earth manganites, whose magnetoelectric effect is associated with the competition between AFM and FM exchanges. Their magnetoelectric coupling has been frequently studied, though its origin is not fully understood, like its strong anisotropic nature. To better understand this issue, TbMn0.08Fe0.02O3, and DyMn0.08Fe0.02O3 single crystals will be grown and studied. Iron substitution of manganese already at low concentrations is known to enhance the magnetoelectric coupling. Since iron, contrarily to manganese, is magnetically isotropic, novel effects in magnetoelectric anisotropy are expected to occur. To unravel the nature of such effects, a study of structure, lattice dynamic, magnetic, thermal and ferroelectric properties will be carried out as a function of temperature for different magnetic field directions with respect to crystallographic directions.
Duration: 1.1.2016 - 31.12.2017

Atomic structure and exceptional properties of intermetallics, amorphous, nanocrystalline and complex metallic alloys
Atomárna štruktúra a unikátne vlastnosti intermetalík, amorfných, nanokryštalických a komplexných kovových zliatin
Program: SRDA
Project leader: RNDr. Škorvánek Ivan CSc.
Duration: 1.7.2016 - 31.12.2019

Design of the structure and the functional properties of soft magnetic 3-d transitions metals based composites
Dizajn štruktúry a funkčných vlastností magneticky mäkkých kompozitných materiálov na báze 3-d prechodných kovov
Program: SRDA
Project leader: RNDr. Baťková Marianna PhD.
Annotation:The project focuses on structure and functional properties design of 3-d transition metals based soft magnetic composite materials, in which will be carried out the experimental research of functional properties of advanced materials with heterogeneous structure consisting of isolated ferromagnetic particles. Magnetic micro- and nanocomposite systems will be prepared using advanced powder metallurgy method and current chemical processes. The research will be focused on explanation of the interface influence on the electric, magnetic and mechanical properties investigated magnetic composite materials. Expected results extend the potential for application of advanced soft magnetic materials suitable for use in a medium frequencies, where ferrites are currently used.
Duration: 1.7.2016 - 31.12.2019

Exotic quantum states of low-dimensional spin and electron systems
Exotické kvantové stavy nízkorozmerných spinových a elektrónových systémov
Program: SRDA
Project leader: RNDr. Čenčariková Hana PhD
Annotation:The project is devoted to theoretical study of low-dimensional quantum spin and electron systems, which will be examined by the combination of advanced analytical and numerical methods including among other matters exact mapping transformations, transfer-matrix method, strong-coupling approach, classical and quantum Monte Carlo simulations, exact diagonalization and density-matrix renormalization group method. The obtained theoretical outcomes will contribute to a deeper understanding of exotic quantum states of spin and electron systems such as being for instance different kinds of quantum spin liquids as well as quantum states with a subtle long-range order of topological character or with a character of valence-bond solid. The project will significantly contribute to a clarification of unconventional magnetic behavior of selected low-dimensional magnetic materials and thus, it will have significant impact on a current state-of-the-art in the field of condensed matter physics and material science. On the other hand, a detailed investigation of quantum entanglement will establish borders of applicability of the studied spin and electron systems for the sake of quantum computation and quantum information processing. Another important outcome of the project is to clarify nontrivial symmetries in tensor states of the strongly correlated spin and electron systems affected by either position dependent interactions or changes in lattice geometries, which induce phase transitions of many types.
Duration: 1.7.2017 - 30.6.2021

Graphene-based nanoplatform for detection of cancer
Grafénová nanoplatforma na detekciu rakoviny
Program: SRDA
Project leader: Ing. Koneracká Martina CSc.
Annotation:This project proposal reflects current technological progress and new opportunities in biomedical applications of graphene-based sensors. Our main goals include the design and development of a graphene oxide multifunctional nanoplatform (GO-MFN) for the detection of tumor cells. In the first step, the development of graphene oxide nanoflakes of appropriate size functionalized by monoclonal antibody is planned. For sensing the tumor cells, GO-MFN of 100 nm size able to interact with a single cell will be prepared. Magnetic nanoparticles added to GO-MFN will enable the inspection of deep tissues by nuclear magnetic resonance. The degree of oxidation of GO, type of the functional groups, optimal functionalization with covalently bound monoclonal antibodies and magnetic nanoparticles, are the most important technological steps. The analysis of the basic interactions related to tumor sensing will be conducted in vitro on 2D and 3D cell models up to the proof-of-principle stage that will be directly applicable to laboratory and preclinical testing. The GO-MFN interaction with the cell membrane and with the cell interior will be analysed with subcellular resolution. Such an approach will bring original knowledge and a detailed understanding of the tumor sensing process that is important for the optimization of the sensor sensitivity. Detection of biomolecules bound to GO-MFN will be addressed in real time by several techniques. The project is based on a complex multidisciplinary approach, ranging from physics and chemistry up to biomedicine and combining excellent science and the most sophisticated nano and bio-engineering. The involved partners possess key skills, infrastructure, antibodies and tumor models, and are highly motivated to reach the project goals.
Duration: 1.7.2015 - 30.6.2019

Interaction of magnetic fluids with electromagnetic field
Interakcia magnetických kvapalín s elektromagnetickým poľom
Program: VEGA
Project leader: RNDr. Timko Milan CSc.
Annotation:The proposed project will be devoted to the study magnetic principle of heating mechanism – hyperthermia in magnetic nanoparticles systems in dependence on preparation process, size and size distribution and magnetic properties. Besides usually used biocompatible spherical anoparticles as a subjects of this proposal will be special prepared magnetosome and magnetoferritin containing spherical magnetite nanoparticles. The obtained experiences for achievement high specific heat power will enable the application magnetic nanoparticles at cancer treatment in biomedicine. We aim to investigate the shielding (absorption and reflection) effects of transformer oil based magnetic fluid. Besides the unique cooling and isolating properties, these magnetic fluids can be reliable shielding medium in electromagnetic devices as well. The research on radiation stability of MFs will address electromagnetic fields and another type radiation.
Duration: 1.1.2016 - 31.12.2019

Complementary study of superconductivity of selected materials
Komplementárne štúdium supravodivosti vybraných materiálov
Program: VEGA
Project leader: RNDr. Kačmarčík Jozef PhD
Annotation:Since the discovery of the two-gap superconductivity in MgB2 almost 15 years ago, a continuous search for other examples of this special feature is maintained. Another interesting issue of these days in condensed matter physics is investigation of materials with competing orders, where for example superconductivity coexists or compete with magnetic ordering or charge density waves. Within the project we will focus on study of several representatives of these groups – we will confirm or disconfirm presence of two energy gaps in LaRu4As12 and Bi2Pd, we will explore competing orders in CuxTiSe2 and CeCoIn5 and we will address spatially constrained superconductivity in granular doped diamond. Clarification of their superconducting mechanism could shed some light on other superconducting materials. We will also work on development of new experimental methods – implementation of a resistive calorimeter and mastering and further enhancement of local magnetometry using Scanning Hall-probe microscope.
Duration: 1.1.2016 - 31.12.2019

Complex study of effects in low-dimensional quantum spin systems
Komplexné štúdium efektov v nízko-rozmerných kvantových spinových systémoch
Program: SRDA
Project leader: RNDr. Čenčariková Hana PhD
Annotation:The project is devoted to the theoretical as well as experimental study of selected quasi-two- dimensional magnetically frustrated spin system, namely Cu(tn)Cl2 (tn=1,3 – diaminopropane). The complex study will be performed with a help of stage-of-the-art methods of theoretical physics based on the Density Functional Theory and experimental analyses, including the study of magnetic, transport and mechanical properties. In theoretical analyses we will focus on the study of magnetic properties, influence of spin-orbit coupling and van der Waals interaction as well as thermodynamics stability, lattice specific heat and last, but no least, elastic constants of Cu(tn)Cl2 compound. To investigate the presence of phase transition in real material the thermodynamics characteristics, like specific-heat behaviour, susceptibility, magnetization or thermal conductivity will be examined experimentally. The mechanical analysis will be concentrate on examination of elastic properties, like Young modulus, Poisson ratio, thermal expansion as well as the sample hardness. The obtained results will contribute to a deeper understanding of mechanisms leading to the unconventional phenomena in two-dimensional magnetically frustrated spin system and will help us to better understand the role of quantum fluctuations in these materials.
Duration: 1.1.2017 - 31.12.2018

Magnetization and relaxation processes in magnetic particles and composites.
Magnetizačné a relaxačné procesy v magnetických časticiach a kompozitoch.
Program: VEGA
Project leader: RNDr. Kováč Jozef CSc.
Annotation:The project is oriented on experimental investigation of the structure and magnetic properties of magnetic particles with the size of several nanometers to several hundred micrometers. The particles (with amorphous, nanocrystalline, or polycrystalline structure) are based on ferromagnetic metals and alloys, and are covered with an inorganic or organic layer, and after technological treatments become precursors for the preparation of composites. The research is focused on investigation the magnetization and relaxation processes in ferromagnetic particles under different physical conditions as ferromagnetic phase content, temperature, amplitude and frequency of the magnetic field. Expected results will help to expand the application potential of this class of advanced materials for a variety of medical and technological applications.
Duration: 1.1.2016 - 31.12.2019

Magnetoelectric and magnetocaloric effect in exactly solvable lattice-statistical models
Magnetoelektrický a magnetokalorický jav v exaktne riešiteľných mriežkovo-štatistických modeloch
Program: VEGA
Project leader: RNDr. Čenčariková Hana PhD
Annotation:Magnetoelectric and magnetocaloric effects will be examined in detail with the help of exactly solvable lattice-statistical models including Ising spin systems, Ising-Heisenberg spin systems and coupled spin-electron systems, which consist of localized Ising spins and delocalized electrons. The primary goal of the project is to explore an influence of external electric field on basic magnetic properties and an influence of external magnetic field on basic thermodynamic properties of the studied lattice-statistical models. A response of magnetic system on a change of external electric and magnetic fields will be investigated mainly in a vicinity of phase transitions (including quantum ones), where particularly interesting behaviour can be expected. The rigorous theoretical results will contribute to a deeper understanding of both studied cooperative phenomena, what enables to propose a subsequent optimalization of technologically important properties of multifunctional materials and magnetic refrigerants.
Duration: 1.1.2016 - 31.12.2019

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Matud Mihalik
Program: VEGA
Project leader: RNDr. Mihálik Matúš PhD.
Duration: 1.1.2016 - 31.12.2019

Mechanical properties and stability of amorphous alloys and nanosized systems
Mechanické vlastnosti a stabilita amorfných zliatin a nanorozmerných sústav
Program: VEGA
Project leader: RNDr. Csach Kornel CSc.
Annotation:The project is focused to solving some problems of plastic deformation and the processes of structural relaxation in amorphous metallic alloys . Analogies and differences in failure micromechanisms of strong defective structure characterized as amorphous, nanocrystalline or strong degenerated crystalline solid solution (in the case of highentropic alloys).
Duration: 1.1.2014 - 31.12.2017

Nanoparticles in anisotropic systems
Nanočastice v anizotrópnych systémoch
Program: SRDA
Project leader: Doc. RNDr. Kopčanský Peter CSc.
Annotation:The proposal is devoted to study complex anisotropic systems based on thermotropic as well as lyotropic (biological) liquid crystals. Liquid crystals represents the uniq state of matter, which is liquid but posses the anisotropic properties. The structuralization phenomena in such systems play key role in fundamental as well as in applied research. The main aim is to s influence the sensitivity of these anisotropic systems to external magnetic field, what will be done by adding suitable magnetic nanoparticles and open the way for their applications in magneto-optical devices.
Duration: 1.7.2016 - 30.6.2020

Low energy cosmic rays, suprathermal particles and space weather
Nízkoenergetické kozmické žiarenie, supratermálne častice a kozmické počasie
Program: SRDA
Project leader: Prof. Ing. Kudela Karel DrSc.
Duration: 1.7.2016 - 27.12.2017

Image analysis of microscopic particles in the automation of optical manipulation techniques applicable in mikro/nanorobotics.
Obrazová analýza mikroskopických častíc pri automatizácii optických manipulačných techník aplikovateľných v mikro/nanorobotike.
Program: SRDA
Project leader: Doc. Ing. Tomori Zoltán CSc.
Annotation:Mikromanipulation based on the laser optical traps represents a progressive method of basic research in the physical, chemical and biomedical sciences. An analogy between the optical manipulation and the robotics evokes exploitation of the artificial intelligence algorithms (computer vision, machine learning, planning of trajectories, etc.). According to some authors, the use of these methods in combination with physical models has led to the significant increase of the effectiveness compared to the classic optimization (up to 1000 times in SVM classifier trained in advance using the Lorenz-Mie scattering light model). The aim of the project is to use a similar philosophy for the experimental tasks solved in our laboratory - cells sorting and fusing, their physical properties measurement and etc. Using the apparatus for 2-photon polymerization we plan to manufacture microrobotic instruments controlled by the optical tweezers traps, e.g. a mikrorobotic arm (gripper). As continuity with our previous project, we would improve the interactive control of optical tweezers via NUI interface (using the position of the fingers and gaze, voice, gestures). This interface should be functional not only locally, but also remotely over a network connection.
Duration: 1.7.2016 - 31.12.2019

Functional and Structural Insights into the Phospholipid-Protein Interaction during Oxidative Stress
Oxidačný stres a fosfolipidovo-proteínové interakcie: funkčné a štrukturálne dôsledky
Program: VEGA
Project leader: MUDr. Musatov Andrey DrSc.
Annotation:Mitochondria play a critical role in cells metabolism and mitochondrial dysfunction has long been implicated in age-related neurodegenerative diseases. One currently accepted theory is that damage to mitochondria, the main source of reactive oxygen species (ROS), initiates these diseases. In fact, when ROS levels overpower the cell’s defenses (oxidative stress), proteins, nucleic acids and/or lipids are irreversibly damaged. Particularly important is that oxidative stress disrupts or modifies the protein-lipid interactions what is one of the essential features of normal cell operation. Such disruptions could be a decisive factor leading to ROS-induced diseases. To test this hypothesis and clearly elucidate the links between mitochondrial oxidative stress and cells dysfunction we propose to investigate both, (i) the role of phospholipid modification in ROS-induced damage to mitochondrial electron transport Complex IV, and (ii) the role of phospholipids and oxidatively modified phospholipids in amyloidogenesis.
Duration: 1.1.2017 - 31.12.2020

Superconductor - insulator transition
Prechod supravodič - izolant
Program: SRDA
Project leader: Mgr. Szabó Pavol CSc.
Annotation:The project aims at understanding the problem of how superconductor transforms to insulator at increased disorder. The questions of what is the force driving the superconducting transition temperature to lower values in ultrathin superconducting films and what is the mechanism of the quantum phase transition between superconducting and insulating states will be addressed experimentally as well as theoretically. The superconducting films of various content with thicknesses down to few atomic layers as well as the nanostructures and resonators on their basis will be prepared. Transport, microwave and optical properties of these objects will be investigated. By means of the subkelvin scanning tunnelling microscope the spectral maps of the quasiparticle density of states at ultralow temperatures and in high magnetic fields will be measured. We will explore possibilities to prepare sensitive photon detectors and amplifiers based on ultrathin disordered superconducting films for the spectroscopy in physics, chemistry and biology. Dynamics of the surface states in another macroscopic quantum object, the superfluid 3He which is the topological insulator at ultra low temperatures, will be investigated experimentally as well as theoretically. The objective is to elucidate the dynamics of surface bound excitations in superfluid 3He by means of mechanical resonators and resolve if the excitations can be identified with the long searched Majorana fermions. By experiment the recent question if samarium hexaboride is a topological insulator will be addressed.
Duration: 1.7.2015 - 30.6.2019

Natural User Interface based on RGB-D Image Processing Algorithms and their Application in Biomedicine
Prirodzené užívateľské rozhranie na báze algoritmov spracovania RGB-D obrazu s využitím v biomedicíne
Program: VEGA
Project leader: Doc. Ing. Tomori Zoltán CSc.
Annotation:New types of 3D sensors are designed to capture the human body or its parts. Their output is usually RGB color image, depth map, as well as 3D coordinates representing the position of the hands, fingers, and the gaze direction. One of the objectives of the project is to improve the manipulation with microscopic particles by using optical tweezers so that the position of the laser traps are controlled by the position of the fingers acquired by the Leap Motion sensor. The second goal is to exploit 3D sensors to support the rehabilitation training in both the clinic environment and at home (telerehabilitation). Contactless system will warn the patient for deviations from the rehabilitation protocol, the output of the program is an evaluation score proposed in close cooperation of programmers with physiotherapists. In doing so, they used the principles of machine learning, computer games, data transmission over the network classifiers and the other techniques in the field of computer vision and graphics.
Duration: 1.1.2016 - 31.12.2018

Rapidly quenched amorphous and Heusler alloys with unique properties. Production and characterization.
Rýchlochladené amorfné a Heuslerove zilatiny s význačnými vlastnosťami. Príprava a charakterizácia.
Program: VEGA
Project leader: RNDr. Kováč Jozef CSc.
Annotation:The project is focused on research and development of new amorphous and Heusler alloys in the shape of ribbons and mainly microwires produced by rapid quenching method, which are characterized by unique properties ideal for technical applications. Mainly, we will deal with Fe-based microwires with magnetic bistability that is sensitive to magnetic field, temperature and mechanical stress. On the other hand, Heusler ribbons and microwires will be studied that are characterized by high spin polarization, magnetocaloric effect and shape memory effect. Small dimensions of these materials together with easy production of large amount of alloy allow their application in construction of miniaturized sensors and actuators.
Duration: 1.1.2016 - 31.12.2018

Rapidly quenched soft and hard magnetic composites for energy and sensor applications.
Rýchlochladené magneticky mäkké a magneticky tvrdé kompozitné materiály pre aplikácie v energetike a senzorike.
Program: VEGA
Project leader: RNDr. Škorvánek Ivan CSc.
Duration: 1.1.2016 - 31.12.2018

Satellite detectors for space physics research
Satelitné detektory pre kozmofyzikálny výskum
Program: VEGA
Project leader: Ing. Baláž Ján PhD.
Annotation: The proposed project aims to support currently running space projects at various phases, covering needs for electronic components, external mechanical Works on 5-axis centres, travel expenses dedicated to working meetings, tests, calibrations, launch campaigns. Current activities: - development of energetic particle spectrometer DOK-M for mission RESONANCE - development of energetic particle spectrometer ASPECT-L for mission LUNA-GLOB - development of UV photometer AMON for Slovak satellite skCUBE - participation on development of energetic neutral atom imager NAIS for Chinese MIT mission - participation on development of energetic particle suite PEP for mission ESA JUICE
Duration: 1.1.2016 - 31.12.2018

Supramolecular complexes of biomacromolecules
Supramolekulárne komplexy biomakromolekúl
Program: VEGA
Project leader: RNDr. Valušová Eva PhD.
Annotation:Cells have numerous examples of nonmembrane-bound compartments containing many biomacromolecules. However, their physicochemical properties play an important role in a number of biological processes, but their complex biochemistry still remain poorly understood. These granules exhibit liquid-like behavior. Two or more biomacromolecules that interact with each other form liquid droplets in which their concentration is higher than in the surrounding aqueous medium. Furthermore, high concentrations of solutes, ions and also some low - molecular weight molecules contribute to mesoscale organization in certain biological systems. The project is devoted to address processes allowing preparing and characterization physicochemical properties of supramolecular complex models of nonmembrane-bound compartments and will also concentrate on mechanisms that occur during these processes.
Duration: 1.1.2016 - 31.12.2019

Superfluid helium-3 as topological insulator
Supratekuté hélium-3 ako topologický izolátor
Program: VEGA
Project leader: RNDr. Skyba Peter DrSc.
Duration: 1.1.2015 - 31.12.2017

Superconducting and magnetocaloric ceramics
Supravodivá a magnetokalorická keramika
Program: VEGA
Project leader: Ing. Diko Pavel DrSc.
Annotation:Research under the project will be focused mainly on understanding the complex phenomena associated with the crystallization of REBCO bolk singlecrystalline superconductors and the development of new efficient processes for their preparation. Part of the capacity will be devoted to research bulk superconductors based on superconducting pnictides and to search for new superconducting materials suitable for making bulk superconductors. Research of magnetocaloric ceramics based on perovskite manganites with a structure similar to REBCO superconductor, will focus on the preparation of new composite materials with a wide magnetic phase transitions suitable for practical applications. The project will be designed in cooperation with foreign universities and research centers: SIT Tokyo; Cambridge University; CRISTMAS Caen; JTU Shanghai; CNRS Grenoble; KAERI South Korea.
Duration: 1.1.2016 - 31.12.2018

Magnetic properties of selected 3d metal-oxides based multiferroics
Štúdium magnetických vlastností vybraných multiferoických materiálov na báze oxidov 3d kovov
Program: VEGA
Project leader: RNDr. Zentková Mária CSc.
Duration: 1.1.2016 - 31.12.2018

Study of the intrinsically disordered protein stability and aggregation
Štúdium stability a agregácie natívne rozbalených proteínov
Program: VEGA
Project leader: RNDr. Fedunová Diana PhD.
Annotation:Intrinsically disordered proteins (IDPs) – proteins without ordered stable structure at physiological conditions – are of great interest especially due to their connections to neurodegenerative diseases. Alzheimer’s disease is characterized by deposits of amyloid plaques or neurofibrillary tangles, formed by fibrous assemblies of the A-beta or tau proteins. The growing evidences indicate that oligomers are more toxic species than fibrils. Proposed projects is oriented on study of the effect of external conditions (pH, T, ionic strength, hydrophobicity) and various compounds (denaturants, osmolytes and polyanions) on conformation of tau and A-beta proteins and kinetics of their oligomerization. Another goal is to define how properties of oligomers affect the kinetics of ibrillization and morphology of obtained amyloid fibrils.
Duration: 1.1.2014 - 31.12.2017

Study of superconducting nanostructures and nanolayers
Štúdium supravodivých nanoštruktúr a nanovrstiev
Program: VEGA
Project leader: Prof. RNDr. Samuely Peter DrSc.
Duration: 1.1.2015 - 31.12.2018

Effects of nanoencapsulated simvastatin on cardiovascular system in experimental metabolic syndrome
Účinok nanoenkapsulovaného simvastatínu na kardiovaskulárny systém pri experimentálnom metabolickom syndróme
Program: SRDA
Project leader: Ing. Závišová Vlasta PhD.
Annotation:High level of cholesterol in the blood increases the risk of heart and vascular diseases. Simvastatin reduces cholesterol production in the liver thus reduces the blood cholesterol level. Long-term use of statins has been associated with the occurrence of side effects, which in addition increase with increasing their dose. In particular, the statin side effect include mainly inhibition of the endogenous synthesis of CoQ10 - basic cofactor for ATP synthesis and paradoxically activation of PCSK9 - an important enzyme for the synthesis of LDLcholesterol. The project aims to increase the bioavailability of simvastatin in the liver, thus reducing the daily dose and consequently to prevent the reduction of CoQ10 levels as well as to block the activation of PCSK9. In order to achieve this this aim, nano-encapsulated simvastatin together with nano-encapsulated CoQ10 or PCSK9 inhibitor, or in the polymer with antioxidant properties will be prepared, tested and applied. This ensures the targeted transport of simvastatin to the liver simultaneously with CoQ10, or inhibitor of PCSK9, or simultaneous increase in antioxidant capacity. In the case of successful results the proposed project may uncover new possibility of using nanocarriers for the treatment of metabolic and cardiovascular diseases.
Duration: 1.7.2015 - 30.6.2019

The role of surface states in samarium hexaboride and other valence-fluctuating systems exhibiting metal-insulator transition
Úloha povrchových stavov v hexaboride samária a iných zmiešanovalenčných systémoch vykazujúcich prechod kov-izolátor
Program: VEGA
Project leader: RNDr. Baťková Marianna PhD.
Annotation:Samarium hexaboride (SmB6) represents an important model system exhibiting metal-insulator transition. A mysterious property of this valence fluctuating semiconductor is that at lowest temperatures it does not reveal divergency of electrical resistivity, but behaves as a metal. SmB6 is nowadays intensively studied also as a possible topological insulator, while metallic topologically protected surface is considered to be a reason of absence of insulating ground state. However, the latest results provide evidence about trivial surface states in SmB6. The project aims to evaluate the role of surface states in electrical conduction of SmB6 by investigating SmB6 thin films, to evaluate relevance of the scenario of topological insulator and other alternative approaches to explain electrical conductivity in SmB6, thus to contribute to understanding the nature of electronic transport in SmB6 and similar systems.
Duration: 1.1.2017 - 31.12.2020

Variability of cosmic ray flux measured on Earth's surface
Variabilita kozmického žiarenia meraného na zemskom povrchu
Program: VEGA
Project leader: Prof. Ing. Kudela Karel DrSc.
Duration: 1.1.2016 - 31.12.2017

Properties of nuclear matter created in interactions with nuclear targets at high energies
Vlastnosti jadrovej matérie vytvorenej v interakciách s jadrovými terčíkmi pri vysokých energiách
Program: VEGA
Project leader: RNDr. Nemčík Ján CSc.
Annotation:The main goal of the present project is theoretical study of nuclear effects, manifestations and properties of nuclear matter created in various reactions on nuclear targets at high energies corresponding mainly to experiments at Relativistic Heavy Ion Collider (RHIC) a Large Hadron Collider (LHC).
Duration: 1.1.2014 - 31.12.2017

Effect of extreme environment (magnetic field, pressure, temperature) on the anomalous behavior of the ground state and phase transitions in strongly correlated materials.
Vplyv extrémnych podmienok (magnetické pole, tlak, teplota) na neobvyklé chovanie základného stavu a fázové prechody v korelovaných látkach
Program: VEGA
Project leader: RNDr. Mihálik Matúš PhD.
Annotation:Nowadays, the trend in research of rare-earth intermetallic compounds is the shift of the interest towards the physical phenomena like Kondo behavior, non-Fermi liquid behavior, or quantum critical point. It has turned out that these exotic types of behavior can be observed in Ce, Yb, or U-based compounds. During the project we will prepare and characterize polycrystals and single crystals from Ce – Ni – Ge; Ce – Co – Ge, U - Ni – Ge and U – Co – Ge ternary systems. The main objective of our project is search for quantum criticality in these antiferromagnetic and ferromagnetic systems and generating quantum fluctuations by suitable chemical doping (Co-Ni substitution; or Ge-Si substitution), high pressure and magnetic field. The additional objective is seeking for the novel materials targeted U-based ternary intermetallic compounds.
Duration: 1.1.2016 - 31.12.2018

Influence of extreme conditions on strongly correlated electron systems
Vplyv extrémnych podmienok na silne korelované elektrónové systémy.
Program: VEGA
Project leader: Doc. RNDr. Gabáni Slavomír PhD.
Annotation:Strong correlations between free (conduction) and bound (localized) electrons in a condensed matter can be change or modified by extreme conditions (very low temperatures, high pressures and magnetic fields), what often leads to the creation of new/exotic states/effects in these materials. In this proposal, we will experimentally study the newest open problems in strongly correlated electron systems (SCES), as surface conductivity in topological Kondo insulators, dynamics of frustrated antiferromagnets, Kondo vs. spin-polaron model in spin glasses, superconductivity under pressure. All this will be a very time-consuming research on new-produced samples.
Duration: 1.7.2016 - 31.12.2019

Development of new procedures for the reconstruction and analysis of the data from the proton-proton collisions at the LHC
Vývoj nových postupov pre rekonštrukciu a analýzu dát z protón-protónových zrážok na urýchľovači LHC
Program: VEGA
Project leader: RNDr. Kladiva Eduard CSc.
Annotation:Theoretical as well as methodological contribution to studies of proton interactions at LHC accelerator, which was just upgraded to a new, so far the highest energy of proton-proton collisions, is proposed in this project. The project goal is to contribute to the improvements of existing reconstruction and analysis procedures, as well as to bring up new aspects from theoretical and methodological points of view. The main contribution to methodology will be the improvement of the hadronic calibration of the ATLAS calorimeter. Contribution to the accuracy improvement of b-jet charge calibration is also foreseen. We assume three main contributions to the analysis, namely improvements of the top-quark charge measurement, searches for Higgs boson and searches for Standard Model (SM) extensions, as well as to obtain improved data to study Bose-Einstein correlations between the pions produced in proton collisions.
Duration: 1.1.2016 - 31.12.2019

The total number of projects: 34