Alexander Feher

Professional Preparation

Predoctoral

Postdoctoral:

Appointments: Academic and Professional

• Director of the Institute of Physics, Faculty of Science, P.J. Šafárik University (2011-2019)
• Doctor honoris causa of V.N. Karazin Kharkiv National University, Kharkiv, Ukraine (2009)
• Doctor honoric causa of Transcarpathian State University, Uzghorod, Ukraine (2007)
• Professor of Physics, P.J.Šafárik University (1999 - present)
• Vice-rector for Research and Information Technology, P.J. Šafárik University (2003 - 2007)
• Dean, Faculty of Science, P.J.Šafárik University (1997 - 2003)
• Associate Professor, Head of Department of Experimental Physics, Faculty of Science, P.J.Šafárik University (1990 - 1997)
• Senior Research Scientist, P.J.Šafárik University (1977 - 1990)
• Visiting professor at the Department of Physics, National Tsing Hua University, Hsinchu, Taiwan (Feb. - May 1995, Feb. - Apr. 1997)
• Visiting scientist at the Kapitza Institute for Physical Problems, RAS, Moscow, Russia (Oct. - Dec. 1998, Mar. - Apr. 1998)
• Visiting professor at the University Joseph - Fourier and CRTBT CNRS Grenoble, France (Oct. - Dec. 2001)

Awards

• Prize of the Mayor of Košice for the physical research at ultralow temperatures (1994)
• Honours for an excellent pedagogic work (JSMF 99)
• Silver honorary certificate of Dionýz Ilkovič for the accomplishments in physical and chemical sciences (1999)
• Prize Slovak Academy of Sciences for the foundation of the common experimental base of ultralow-temperature physics & for the achievements in the field of physics of superfluid He³ (2002)
• Medal of the Slovak Academy of Sciences for the contribution to the development of science (2002)
• Medal of the Charles University, Prague (2003)
• Award of the dean for scientific research (2004, 2018)
• Award of Ministry of Education and Science of the Ukraine for significant personal asset to the development of collaboration in the science and education (2005)
• Gold medal of the Faculty of Science P.J. Šafárik University in Košice for contribution to the development of faculty (2008)
• Prize Slovak Academy of Science for development ultralow-temperature infrastructure (2008)
• Award of the Slovak Academy of Sciences for establishing infrastructure for science, awarded to the Centre of very low- temperature physics of the Institute of Experimental Physics of the Slovak Academy of Sciences and of the P. J. Safarik University in Kosice for establishing cryogenic infrastructure and implementing unique experimental methodologies enabling to study fundamental properties of condensed mater in the temperature range from 100 microkelvins to room temperature.(2008)
• Award of the dean of Faculty of Science P.J. Šafárik University in Košice for scientific research (2009)
• Gold medal of the P.J. Šafárik University in Košice (2009)
• Award of the rector of P.J. Šafárik University in Košice for the excellent scientific results in condensed matter physics at low temperatures (2012)
• Award of the dean for pedagogical activities (2013)
• Gold medal of the Institute of Experimental Physics SAS in Košice (2014)
• Award of the Mayor of  Košice sity (2019)
• Award of the  Ministry of Education, Science, Research and Sport of the Slovak Republic for science and technology (2020)

Pedagogical activities

• General Physics I
• Low Temperature Physics
• Condensed Matter Physics
• Selected Topics of Low Temperature Physics
• Macroscopic Quantum Systems
• Selected Topics of Condensed Matter Physics
• Modern Trends in Physics

Research activities

• Low temperature techniques and methods
• Superfluid 3He
• Quantum magnetism
• Low dimensional magnetism
• non-Fermi liquid behaviour
• Magnetism of organic metals
• Heat transport in low-dimensional systems
• Phonon spectra of qraphene
• Nanoseparation in transition metal oxides
• Glassy semiconductors
• Heat capacity, Boson peak

Significant results of research:

• obtaining of lowest temperature in former Czechoslovakia and cooling of liquid helium-3 down to 280 microkelvins;
• observation of the magnon contribution to the thermal conductivity of the light rare earth metals;
• observation of the linear term in the magnetic relaxation of the homogeneously precessing domain;
• observation of the ballistic resonance and quantum phonon transport in point contacts;
• experimental observation of spin modes (excitons and so-called single ion bound states), which were theoretically predicted in S=1 Heisenberg planar antiferromagnets with subcritical exchange interaction;
• observation of the non-Fermi liquid behavior in highly sodium doped cobaltates.

Autor/co-author of about 270+ papers and about 160 conference contibutions and more than 1200+ SCI citations on the papers, Hirsch index 21.

Supervisor

• Chairman of the state examination committee for obtaining the M.S. degree in Physics at the Faculty of Science, P.J.Šafárik University, Košice (2006 - 2019)
• Chairman of the PhD study in Condensed matter physics at the Faculty of Science, P.J.Šafárik University, Košice (2006 - 2019)
• Number of PhD students 17.

Membership

• C5 Committee IUPAP Member (1993-1999, 2008 - 2014)
• Commission A1/2 International Institute of Refrigeration Member (1995-present), Vice-president (1999 - 2007)
• Scientific Board Member, P.J.Šafárik University (1997 - 2011), Vice-Chairman (2003-2007)
• Scientific Board Member, Faculty of Science, P.J.Šafárik University (1990 - 2019), Chairman (1997 - 2003)
• Scientific Committee for Physical and Mathematical Sciences, Slovak Academy of Sciences, Member(1997 - 2002, 2010 - 2015)
• Scientific Board, Institute of Experimental Physics, Slovak Academy Sciences, Košice, Member (1997 - 2014)
• Scientific Board, Institute of Materials Research,Slovak Academy of Sciences,Košice, Member (1997 - 2003, 2008 - 2011)
• Scientific Board, Institute of Astronomical Institute, Slovak Academy of Sciences, Stará Lesná, Member (1999 - 2001)
• Member of the Scientific council of Centre of Low Temperature Physics - Centre of Excelence SAS (2003 - present)
• Member of the council of national program for science and research "Development of propreactive technologies for an efficient economy" (2002 - 2009)
• Member of the Scientific Board Slovak Academy of Sciences, Bratislava (2002 - 2009)
• Chair of the Courcil of Centers of Excellence of Slovak Research and Development Agency (2007 - 2013)
• Chair of the Centre of Low Temperature Physics - Centre of Excellence P.J.Šafarik University (2006 - 2010)
• Member of the Slovak Commission for Academic Degrees (2011 - 2021)
• Member of the working group of the Government  Slovak Republic Accreditation Commission (2015 - 2019)
• Member of the Learned Society of Slovakia (2016 - present)
• International Member of the National Academy of Educational Sciences of Ukraine (2016 - present)
  
  of the Slovak Commission for Academic Degrees,
  
  of the Slovak Commission for Academic Degrees,
  
  of the Slovak Commission for Academic Degree
  
  of the Slovak Commission for Academic Degree

Projects

National projects (principal investigator):

• Feher A. et al.: Phase transitions and quasiparticles interactions in systems with magnetic ordering and semiconductors, (1987-1990), ŠPZV - I - 5 -1/05
• Feher A. et al.: Superfluid properties of helium-3 and helium-4, (1987-1990), ŠPZV - I - 5 -1/04
• Feher A. et al.: Relaxation, thermal and transport phenomena in low-dimensional structures and quantum fluids at ultralow temperatures, (1990-1993), GAV 1/145 990/93
• Feher A. et al.: Study of magnetic, thermal and transport properties of superfluid He-3 and selected low-dimensional magnetic and other systems at ultralow temperatures, (1994-1997), VEGA 1/1302/94
• Non - linear spin dynamics of selected low-dimensional magnetic systems and superfluid helium - 3 (1997-2000), VEGA 1/4835/97
• Magnetic quantum states of one-dimensional magnets and superfluid ³He at very low temperatures, (2000-2002), VEGA 1/7473/20
• Magnetic quantum states of geometrically frustrated magnets and nanoclusters in ³He at very low temperatures, (2003-2005), VEGA 1/0430/03
• Low-Dimensional Magnetic Materials, (2002-2005), Science and Technology Assistance Agency - 20-009902
• Characterization of Novel Low-Dimensional Magnetic Systems (2002-2004), Science and Technology Assistance Agency - 007/2001
• Magnetostructural correlations in unconventional magnetic materials (2005-2007), Science and Technology Assistence Agency - 20 -005204
• New quantum states in geometrically frustrated systems (2006-2010), Science and Technolgy Assistance Agency - LPP - 0102-06
• Magnetothermal properties of novel low-dimensional magnetic materials (2008-2010), APVV-0006-07
• Centre of Cryogenics and Cryonanoelectronics (2008-2011), APVV-VVCE-0058-07
• Strongly correlated electrons and magnetism in selected transition metal oxides and TCNQ-salts, (2009-2012), VEGA 1/0159/09
• Extrem I - Centre of advanced physical studies of materials in extreme conditions, (2009-2011), ASFEU, Structural fund, OPVaV-2008/2.1/01-SORO, ITMS 26220120005
• Extrem II - Completion of the Centre of advanced physical studies of materials in extreme conditions, (2009-2011), ASFEU, Structural fund, OPVaV-2009/2.1/02-SORO, ITMS 26220120047
• Novel quantum states  in nanoscopic magnetic systems , NEMESYS (2012-2015), Science and Technology Assistance Agency -0132-1

International projects (principal investigator for Slovakia):

• Theoretical and Experimental Studies of Spin Dynamics in Planar S=1 Heisenberg Chains (1996-1997), Slovak - Greek project N 8
• Physics and Technology at Ultralow Temperatures, (1995-1998), PECO ERB 3563 PL 935002
• Novel Magnetic Excitation in Low Dimensional Magnetic Systems, (1998-2000), NSF - INT 97 22935
• Charakterization of Novel Low Dimensional Magnetic Systems, (2001-2004), NSF INT - 00 89 140
• Magnetism and superconductivity in the strongly corelated systems (2006-2007), CZ 117, SK 92
• Magnetism of Molecule - based thin Films, Nanopartides, and Frustrated Systems (2007-2010), NSF DMR - 0701400
• Interplay between magnetism and superconductivity in the new metallic systems with strongly corellated electrons (2008-2009), SK-SRB-01006
• Marie-Curie Conference and Training Courses MSCF-CT-2006 -045781 (2006 - 2010) Programme  EU

Collaboration

• Mark Meisel, University of Florida, Gainesville, USA
• Andrei Salak, Department of Materials and Ceramics Engineering and CICECO – Aveiro Institute of Materials, University of Aveiro,  Aveiro, Portugal
• Vladislav Sechovsky, Charles University Prague, Czech Republik

• Elena Fertman, Jevgenij Syrkin, Alexey V. Fedorchenko, and Eduard Rudavskiy, B.Verkin Institute for Low Temperature Physics and Engineering of NAS of Ukraine ,Kharkiv, Ukraine
• Ruslan Vovk, V.N. Karazin Kharkiv National University, Kharkiv, Ukraine
• Yuriy.V. Radyush and   N.M. Olekhnovich, Scientific-Practical Materials Research Centre of NASB,  Minsk, Belarus
• Volodymir Mitsa,Vasyl Rizak, and Vitalij  Bilanych, Uzhgorod National University,  Ukraine
• Viktor Bunda, Faculty of Design, Transcarpathian Academy of Arts, Uzhgorod, Ukraine
• Yuriy. Eliyashevskyy, Ivan Franko National University of Lviv, Lviv, Ukraine
• Yurij Bunkov and Henri Godfrin, CRTBT CNRS, Grenoble , France

Recent publications

• Structure and transport properties of the Fe0.5Ni0.5 composite,Khadzhay, G.Y., Vovk, S.R., Vovk, R.V., Gevorkyan, E.S., Zubenko, N.S., Kislitsa, M.V., Chishkala,B.O., Feher, A., Kollar, P., Fuzer, J. Low Temperature Physics, 47 (2021) 188-191
•  Investigation of structural changes in AsxSe100-x amorphous thin films after electron beam irradiation with XAFS, XANES and Kelvin force microscopy, Shylenko, O., Bilanych, B., Bilanych, V., Latyshev, V., Saksl, K., Molcanova, Z., Ballokova, B., Durisin, J., Lytvyn, P.M., Feher, A., Rizak, V., Komanicky, V., Applied Surface Science 530 (2020) 147266 - 11            
• Reversible structural changes of in situ prepared As₄₀Se₆₀ nanolayers studied by XPS spectroscopy, O. Kondrat, R. Holomb, A. Csik, V. Takats, M. Veres, A. Feher, T. Duchon, K. Veltruska, M. Vondraček, N. Tsud, V. Matolin, K.C. Prince, V. Mitsa:, Applied Nanoscience, 9 (2019) 917 - 924
• Phenomenon of Coversion Polymorphism in Bi-Containing Metastable Perovskites, D.D. Khalyavin, A.N. Salak, E.L. Fertman, O. V. Kotlyar,E. Earley, N.M. Olekhnovich, A.V. Pushkarev, Y.V. Radyush, A.V. Fedorchenko, V.A. Desnenko, P.Manuel, L. Ding, E. Cižmár, and A. Feher, ChemComm 55 (2019) 4683 – 468
• Magnetic properties of the anion-radical salts [M(bipy)₃](TCNQ)₄·X, where M = Co, Ni, Zn and X = H₂O or (CH₃)₂CO, D. Šoltésová, G. Vasylets, E. Čižmár, A.V. Fedorchenko, V. Starodub, V. Medviediev, O. Shishkin, O. Bukrynov, and A. Feher , Inorganica Chimica Acta  471 (2018) 272 – 279 

• Influence of the reduced dimensionality on the thermodynamical and electrical properties of photosensitive BiOX (X = Cl, Br, and I) semiconductors, D. Lotnyk, V. Komanický, A. Feher, V. Bunda, Appl. Phys. Lett. 109  (2016) 242106

• Giant reversible rotating cryomagnetocaloric effect  in KEr(MoO₄)₂  induced by a crystal-field anisotropy, V.Tkáč, V., A.Orendáčová A., E. Čižmár, M. Orendáč, A. Feher, A.G. Anders, Physical Review B 92 (2015) 024406

• Iron-Chromium Oxide Nanoparticles Self-Assembling into Smectic Mesophases, Jacob M., Cazacu M., Racles C., Ignat M., Cozan V.,Sacarescu L.,Timpu D., Kajňaková M., Botko M., Feher A., and Turtu C., RSC Adv. 4 (2014) 6293-6299

• Impurity levels in the electronic spectra of graphene,  Feher A., Feodosyev S., Gospodarev I., Kotlyar O., Kravchenko K., Manzhelii E., and Syrkin E., Superlattices and Microstructures 53 (2013) 55 – 62
• Quasi-Particle Spectra on Substrate and Embedded Graphene Monolayers,  Feher A., Syrkin E.S., Feodosyev S., Gospodarev I.A., Kravchenko K., In: Physics and Applications of Graphene – Theory. InTech, Rieka, 2011, ISBN 9789533071527, pp. 93-112
• The Features of Low Frequency Atomic Vibrations and Propagation of Acoustic Waves in Heterogeneous Systems,  Feher A., Syrkin E.S., Feodosyev S., Gospodarev I.A.,Manzheliy E.V., Kotlar A. Kravchenko K., In: Waves in Fluids and Solids. InTech, Rieka,2011,ISBN 9789533072852, pp. 103-126)
• Analysis of the Low Temperature Magnetic Contributions to the Specific Heat of (NdxY1-x)2/3Ca1/3MnO3 ( x= 0,01),  Feher A., Dolya A., Fertman E., Kajňaková M., Desnenko V., Šebek J., Šantavá E., Journal of Low Temperature Physics , 162 (2011) 529 – 535
• Two-gap magnetic structure of the two-stack anion-radical salt (N-Me-3,5-Di-Me-Py)(TCNQ)2 (Py is pyridine),  A.Radváková, O.N.Kazheva, A.N.Chekhlov, O.A.Dyachenko, M.Kucmin, M.Kajňaková, A.Feher, V.A.Starodub, Journal of Physics and Chemistry of Solids 71 (2010) 752-757
• Effect of defects on the quasiparticle spectra of graphite and graphene,  A. Feher, S.B.Feodosyev, I.A.Gospodarev, V.I.Grishaev, K.V.Kravchenko, E.V.Manzhelii, E.S.Syrkin, Low Temperature Physics, 35 (2009) 679-686
• Effect of Y-doping on the magnetic and charge orderings in Nd_2/3Ca_1/3MnO₃,  E.Fertman, A.Beznosov, D.Sheptyakov, V.Desnenko, M.Kajnáková, A.Feher, D.Khalyavin, JMMM 321 (2009) 316-320
• Resonance absorption, reflection, transmission of phonons and heat transfer through interface between two solids,  Yu.A.Kosevich, A.Feher, E.S.Syrkin, Low.Temp.Phys. 34 (2008) 725
• Influence of Ti₄₊ on the magnetic state of CaRu_1-xTi_xO₃, A.Zorkovská, A.Baran, I.Bradaric, I.Savic, J.Šebek, E.Šantavá, P.Svoboda, D.Maricev, S.Kohuot, H.Keller, A.Feher, JMMM 316 (2007) E699-E702
• Magnetic properties of the quasi-two-dimensional S=1/2 Heisenberg spatially anisotropic triangular lattice magnet Cu(H₂O)₂C₂H₈N₂)SO₄,  Kajňaková M., Orendáč M., Orendáčová A., Vlček A., Černák J., Kravchyna O.V., Anders A.G., Balanda M., Park J.-H., Feher A., Meisel M.W., Phys. Rev. B 71 (2005) 014435
• Interplay between mesoscopic phase separation and bulk magnetism in the layered Na_xCoO₂,  Zorkovská A., Orendáč M., Šebek J., Šantavá E., Svoboda P., Bradaric I., Savic I., Feher A.,Phys. Rev. B 72 (2005) 132412
• Low-temperature phonon transport in 3D point-contacts,  Feher A., Mamalui A.A., Dulfan A. Ya., Syrkin E.S., Shkorbatov A.G., Low Temp. Phys. 31 (2005) 921
• Mesoscopic phase separation in Na_xCoO₂ (0.65 <= x <= 0.75),  P. Carretta, M. Mariani, C.B. Azzoni, M.C. Mozatti, I. Bradaric, I. Savic, A. Feher, J. Šebek, Phys. Rev. B 70 (2004) 024409
• Nonlinear excitations in CsNiF₃ in magnetic fields perpendicular to the easy plane,  M. Orendáč, A. Orendáčová, E. Čižmár, J. H. Park, A. Feher, S. J. Gamble, S. Gabáni. K. Flachbart, J. Karadamoglou, M. Poirier, M. W. Meisel, Phys. Rev. B 69 (2004) 184403
• Specific heat of magnetic excitations in a one-dimensional S=1 Heisenberg magnet with strong planar anisotropy,  A. Feher, M. Orendáč, A. Orendáčová and E. Čižmár, Low Temp. Phys. 28  (2002) 768-773
• Monte Carlo studies of the magnetic phase diagram of KEr (MoO₄)₂: A dipolar magnet with strong tetragonal distortion,  A. Orendáčová, D. Horváth, M. Orendáč E. Čižmár, M. Kačmár, V. Bondarenko, A.G. Anders and A. Feher, Phys. Rev B65 (2002) 014420-1 - 014420-8
• Magnetic and Thermodynamic Properties of
  Ni(C₁₀H₈N₂)₂Ni(CN)₄H₂O: an S = 1 Heisenberg Antiferromagnetic Chain with Strong In-plane Anisotropy and Subcritical Exchange Coupling, M. Orendáč, E. Čižmár, A. Orendáčová, J. Černák, A. Feher, M.V. Meisel, K.A. Abboud, S. Zvyagin, M. Sieling, T. Rieth and B. Luthi, Phys. Rev. B 61 (2000) 3223-3226
• Single-ion Bound States in S = 1 Heisenberg Antiferromagnetic Chains with Planar Anisotropy and Subcritical Exchange Coupling,  M.Orendáč, S.Zvyagin, M. Orendáčová, M.Sieling, B.Luthi, A.Feher, and M.W.Meisel, Phys.Rev. B60 (1999) 4170-4175
• KEr (MoO₄)₂: A quasi-one-dimensional S = 3/2 Blume -Capel system, D.Horváth, A.Orendáčová, M.Orendáč, M.Jaščur, B.Brutovský, A.Feher, Phys.Rev. B60 (1999) 1167-1174
• Surface oscillations of homogeneously precessing domain with axial symetry,  Ľ.Lokner, A.Feher, M.Kupka, R.Harakály, R. Scheibel, Yu.M.Bunkov, P.Skyba, Europhysics Lett. 40 (1997) 539-544
• Magnetic relaxation in superfluid ³He-B at very low temperatures, A.Feher, and P. Skyba, Czech. J. Phys. 46 (1996), 3019-3024, (invited lecture at LT´21)
• Experimental Evidence of the Wetting-Nonwetting Crossover for Coherent Quantum Precession in Superfluid ³He-B, P.Skyba, R.Harakály, Ľ.Lokner and A.Feher, Phys.Rev. Lett.75 (1995) 477-480
• More info:

             ORCID http://orcid.org/0000-0001-8845-4709

            ID SCOPUS 7004801843

            ID WOS (Publon) H-1991-2016

Other

• Member European Physical Society (1995-present)
• Member American Physical Society (1996-present)
• Member of the Editorial Council Acta Physica Slovaca (2000 - 2006)
• Member of the Advisory Committees of: LT´21 (Praha), LT´22 (Helsinki), LT´23 (Hiroshima): LT´24 (Orlando), LT´25 (Amsterdam), LT´26 (Peking), ULT´99 (St.Peterburg), ULT´08 (London), ULT´11 (Daejeon), CSMAG´01 (Košice), CSMAG´04 (Košice), CSMAG´07 (Košice), CSMAG´10 (Košice), QFS 2010 (Grenoble), Cryogenics 2010 (Bratislava), The 23rd IIR International Congress of Refrigeration (Prague), Cryogenics 2012 (Dresden),
• Member of the Committee for defending DrSc theses/Condensed Malter Physics and acoustic (2000-present)
• Chair of the Committee for defending DrSc theses/Condensed Malter Physics and acoustic (2010-2016)
• Member of the Slovak Committee for academic degrees (2011-2021)
• Member of the Committee for defending PhD theses Condensed Malter Physics and Acoustic (1998-present)
• Chairman of the Ultralow Temperature Conference, ULT 96, Stará Lesná, Slovakia
• Member of the Advisory Committee QFS´07, Kazan, Russia (2007), QFS´10, Grenoble, France (2010)
• Member of the International Committee Cryocourse, Marie-Curie, Programme EU, 2007, 2008, and 2009
• Chairman of the Cryoconference 2010, Myto pod Dumbierom
• Member of the Scientific Commitee of the conference "Physics of the materials ´09, Košice 2009
•  Member of the Editorial boardof the  Bulletin of the Kharkov National University, Series Physics (2012 - present)
• Member of the Editorial board of the Scientific Herald of Uzhhorod University. Series Physics (2019 - present)

Hobbies

Breeding of domestic animals,cooking, water sports, hiking