A B O U T   M E
Assoc. Prof. Mgr. Denis Kochan, PhD

   Position: SUPERCONDUCTING SPINTRONICS GROUP leader / IMPULZ felllow
   E-mail: denis.kochan@savba.sk
   Tel. (+421 2) 20910704
   Office 113
   Personal webpage: http://quantum.physics.sk/
   2019

ABOUT ME
My research interests ...

List of publications
  1. Yaroslav Zhumagulov, Denis Kochan, Jaroslav Fabian:
    Emergent correlated phases in rhombohedral trilayer graphene induced by proximity spin-orbit and exchange coupling | pdf |
    Phys. Rev. Lett. 132, 186401 (2024) [arXiv:2305.14277]
  2. Andreas Costa, Jaroslav Fabian, Denis Kochan:
    Microscopic study of the Josephson supercurrent diode effect in Josephson junctions based on two-dimensional electron gas | pdf |
    Phys. Rev. B 108, 054522 (2023) [arXiv:2303.14823]
  3. Andreas Costa, Christian Baumgartner, Simon Reinhardt, Johanna Berger, Sergei Gronin, Geoffrey C. Gardner, Tyler Lindemann, Michael J. Manfra, Denis Kochan, Jaroslav Fabian, Nicola Paradiso, Christoph Strunk:
    Sign reversal of the Josephson inductance magnetochiral anisotropy and 0–π-like transitions in supercurrent diodes | pdf |
    Nature Nanotechnology 18, 1266–1272 (2023) [arXiv:2212.13460]
  4. Karol Szałowski, Marko Milivojević, Denis Kochan, Martin Gmitra:
    Spin-orbit and exchange proximity couplings in graphene/1T-TaS2 heterostructure triggered by a charge density wave | pdf |
    2D Materials 10, 025013 (2023) [arXiv:2211.02153]
  5. Lorenz Fuchs, Denis Kochan, Christian Baumgartner, Simon Reinhardt, Sergei Gronin, Geoffrey C. Gardner, Tyler Lindemann, Michael J. Manfra, Christoph Strunk, Nicola Paradiso:
    Anisotropic vortex squeezing in synthetic Rashba superconductors: a manifestation of Lifshitz invariants | pdf |
    Phys. Rev. X 12, 041020 (2022) [arXiv:2201.02512]
  6. Michael Barth, Jacob Fuchs, and Denis Kochan:
    Spin relaxation, Josephson effect, and Yu-Shiba-Rusinov states in superconducting bilayer graphene | pdf |
    Phys. Rev. B 105, 205409 (2022) [arXiv:2110.12998]
  7. Christian Baumgartner, Lorenz Fuchs, Andreas Costa, Jordi Pico Cortes, Simon Reinhardt, Sergei Gronin, Geoffrey C. Gardner, Tyler Lindemann, Michael J. Manfra, Paulo E. Faria Junior, Denis Kochan, Jaroslav Fabian, Nicola Paradiso, Christoph Strunk:
    Effect of Rashba and Dresselhaus spin-orbit coupling on supercurrent rectification and magnetochiral anisotropy of ballistic Josephson junctions
    J. Phys.: Condens. Matter 34, 154005 (2022) [arXiv:2111.13983]
  8. Alexander E. Lukyanov, Ivan A. Kovalev, Vyacheslav D. Neverov, Yaroslav V. Zhumagulov, Andrey V. Krasavin, and Denis Kochan:
    Strength of the Hubbard potential and its modification by breathing distortion in BaBiO3
    Phys. Rev. B 105, 045131 (2022) [arXiv:2110.00084]
  9. Christian Baumgartner, Lorenz Fuchs, Andreas Costa, Simon Reinhardt, Sergei Gronin, Geoffrey C. Gardner, Tyler Lindemann, Michael J. Manfra, Paulo E. Faria Junior, Denis Kochan, Jaroslav Fabian, Nicola Paradiso, Christoph Strunk:
    A Josephson junction supercurrent diode
    Nature Nanotechnology 17, pages 39–44 (2022) [arXiv:2103.06984]
  10. Julia Amann, Tobias Völkl, Tobias Rockinger, Denis Kochan, Kenji Watanabe, Takashi Taniguchi, Jaroslav Fabian, Dieter Weiss, and Jonathan Eroms:
    Counterintuitive gate dependence of weak antilocalization in bilayer graphene/WSe2 heterostructures
    Phys. Rev. B 105, 115425 (2022) [arXiv:2012.05718]
  11. Yuriy G. Pogorelov, Vadim M. Loktev, Denis Kochan:
    Impurity resonance effects in graphene vs impurity location, concentration and sublattice occupation
    Phys. Rev. B 102, 155414 (2020) [arXiv:2005.12643]
  12. Petra Högl, Tobias Frank, Denis Kochan, Martin Gmitra, Jaroslav Fabian:
    Chiral Majorana fermions in graphene from proximity-induced superconductivity
    Phys. Rev. B 101, 245441 (2020) [arXiv:2004.01767]
  13. Petra Högl, Tobias Frank, Klaus Zollner, Denis Kochan, Martin Gmitra, Jaroslav Fabian:
    Quantum Anomalous Hall Effects in Graphene from Proximity-Induced Uniform and Staggered Spin-Orbit and Exchange Coupling
    Phys. Rev. Lett. 124, 136403 (2020) [arXiv:2004.01760]
  14. Raphael Kozlovsky, Ansgar Graf, Denis Kochan, Klaus Richter, Cosimo Gorini:
    Magnetoconductance, Quantum Hall Effect, and Coulomb Blockade in Topological Insulator Nanocones
    Phys. Rev. Lett. 124, 126804 (2020) [arXiv:1909.13124]
  15. Denis Kochan, Michael Barth, Andreas Costa, Klaus Richter, Jaroslav Fabian:
    Breakdown of the Hebel-Slichter effect in superconducting graphene due to the emergence of Yu-Shiba-Rusinov states at magnetic resonant scatterers
  16. Susanne Wellnhofer, Adam Stabile, Denis Kochan, Martin Gmitra, Ya-Wen Chuang, Jun Zhu, Jaroslav Fabian:
    Spin relaxation in fluorinated single and bilayer graphene
    Phys. Rev. B 100, 035421 (2019) [arXiv:1903.08973]
  17. Jeongsu Lee, Denis Kochan, and Jaroslav Fabian:
    Interplay of resonant states and Landau levels in functionalized graphene
    Phys. Rev. B 99, 035412 (2019) [arXiv:1812.07299]
  18. Tobias Völkl, Denis Kochan, Thomas Ebnet, Sebastian Ringer, Daniel Schiermeier, Philipp Nagler, Tobias Korn, Christian Schüller, Jaroslav Fabian, Dieter Weiss, Jonathan Eroms:
    Absence of a giant spin Hall effect in plasma-hydrogenated graphene
    Phys. Rev. B 99, 085401 (2019) [arXiv:1809.10475]
  19. Jyoti Katoch, Tiancong Zhu, Denis Kochan, Simranjeet Singh, Jaroslav Fabian, Roland K. Kawakami:
    Transport Spectroscopy of Sublattice-Resolved Resonant Scattering in Hydrogen-Doped Bilayer Graphene
    Phys. Rev. Lett. 121, 136801 (2018) [arXiv:1810.00259]
  20. Andreas Costa, Jaroslav Fabian, Denis Kochan:
    Connection between zero-energy Yu-Shiba-Rusinov states and 0-π transitions in magnetic Josephson junctions
    Phys. Rev. B 98, 134511 (2018) [arXiv:1803.02063]
  21. Susanne Irmer, Denis Kochan, Jeongsu Lee, Jaroslav Fabian:
    Resonant scattering due to adatoms in graphene: top, bridge, and hollow position
    Phys. Rev. B 97, 075417 (2018) [arXiv:1712.08377]
  22. Tobias Frank, Petra Högl, Martin Gmitra, Denis Kochan, Jaroslav Fabian:
    Protected pseudohelical edge states in proximity graphene ribbons and flakes
    Phys. Rev. Lett. 120, 156402 (2018) [arXiv:1707.02124]
  23. Denis Kochan, Susanne Irmer, Jaroslav Fabian:
    Model spin-orbit coupling Hamiltonians for graphene systems
    Phys. Rev. B 95, 165415 (2017) [arXiv:1610.08794]
  24. Tobias Frank, Susanne Irmer, Martin Gmitra, Denis Kochan, Jaroslav Fabian:
    Copper adatoms on graphene: theory of orbital and spin-orbital effects
    Phys. Rev. B 95, 035402 (2017) [arXiv:1610.01798]
  25. Martin Gmitra, Denis Kochan, Petra Högl, Jaroslav Fabian:
    Trivial and inverted Dirac bands, and emergence of quantum spin Hall states in graphene on transition-metal dichalcogenides
    Phys. Rev. B 93, 155104 (2016) [arXiv:1510.00166]
  26. Klaus Zollner, Tobias Frank, Susanne Irmer, Martin Gmitra, Denis Kochan, Jaroslav Fabian:
    Spin-orbit coupling in methyl functionalized graphene
    Phys. Rev. B 93, 045423 (2016) [arXiv:1507.02820]
  27. Jan Bundesmann, Denis Kochan, Fedor Tkatschenko, Jaroslav Fabian, Klaus Richter:
    Theory of spin-orbit induced spin relaxation in functionalized graphene
    Phys. Rev. B 92, 081403 (2015) [arXiv:1506.00040]
  28. Denis Kochan, Susanne Irmer, Martin Gmitra, Jaroslav Fabian:
    Resonant scattering by magnetic impurities as a model for spin relaxation in bilayer graphene
    Phys. Rev. Lett. 115, 196601 (2015) [arXiv:1504.03898]
  29. David Soriano, Dinh Van Tuan, Simon M. -M. Dubois, Martin Gmitra, Aron W. Cummings, Denis Kochan, Frank Ortmann, Jean-Christophe Charlier, Jaroslav Fabian, Stephan Roche:
    Spin Transport in Hydrogenated Graphene
    2D Mater. 2, 022002 (2015) [arXiv:1504.01591]
  30. Susanne Irmer, Tobias Frank, Sebastian Putz, Martin Gmitra, Denis Kochan, Jaroslav Fabian:
    Spin-orbit coupling in fluorinated graphene
    Phys. Rev. B 91, 115141 (2015) [arXiv:1411.0016]
  31. Denis Kochan, Martin Gmitra, Jaroslav Fabian:
    Spin relaxation mechanism in graphene: resonant scattering by magnetic impurities
    Phys. Rev. Lett. 112, 116602 (2014) [arXiv:1306.0230]
  32. Martin Gmitra, Denis Kochan, Jaroslav Fabian:
    Spin-orbit coupling in hydrogenated graphene
    Phys. Rev. Lett. 110, 246602 (2013) [arXiv:1303.2806]
  33. D. Kochan, D. Krejcirik, R. Novak, P. Siegl:
    The Pauli equation with complex boundary conditions
    J. Phys. A: Math. Theor. 45 (2012), 444019 [arXiv:1203.5011]
  34. Denis Kochan, Martin Gmitra, Jaroslav Fabian:
    Theory of the ac spin-valve effect
    Phys. Rev. Lett. 107, 176604 (2011) [arXiv:1111.7244]
  35. Denis Kochan:
    Functional integral for non-Lagrangian systems
    Phys. Rev. A 81, 022112 (2010) [arXiv:1001.1863]
  36. Denis Kochan:
    Does a functional integral really need a Lagrangian?
    Acta Polytech. 50, 57-61 (2010) [arXiv:0812.0678]
  37. Denis Kochan:
    Direct quantization of equations of motion: from classical dynamics to transition amplitudes via strings
    Int. J. Geom. Meth. Mod. Phys. 07, 1385-1405 (2010) [arXiv:hep-th/0703073]
  38. Denis Kochan:
    How to Quantize Forces(?): An Academic Essay How the Strings Could Enter Classical Mechanics
    J. Geom. Phys. 60, 219-229 (2010) [arXiv:hep-th/0612115]
  39. Denis Kochan:
    Noncommutative Lagrange Mechanics
    SIGMA 4, 028 (2008) [arXiv:hep-th/0610061]
  40. Denis Kochan:
    Grassmann Electrodynamics and General Relativity
    Journal of Geometry and Physics 51, 196-210 (2004) [arXiv:math/0309376]
  41. Denis Kochan:
    Pseudodifferential forms and supermechanics
    Czechoslovak Journal of Physics 54, 177-188 (2004) [arXiv:math/0308232]
  42. Michal Demetrian, Denis Kochan:
    Quantum mechanics on non-commutative plane
    Acta Physica Slovaca 52, 1-9 (2002) [arXiv:hep-th/0102050]
Submitted
  1. Wun-Hao Kang, Michael Barth, Aitor Garcia-Ruiz, Alina Mreńca-Kolasińska, Ming-Hao Liu, Denis Kochan:
    Magnetotransport Signatures of the Radial Rashba Spin-Orbit Coupling in Proximitized Graphene
    [arXiv:2402.13424]
  2. Yaroslav Zhumagulov, Denis Kochan, Jaroslav Fabian:
    Swapping exchange and spin-orbit induced correlated phases in ex-so-tic van der Waals heterostructures
    [arXiv:2307.16025]
  3. Simon Reinhardt, Tim Ascherl, Andreas Costa, Johanna Berger, Sergei Gronin, Geoffrey C. Gardner, Tyler Lindemann, Michael J. Manfra, Jaroslav Fabian, Denis Kochan, Christoph Strunk, Nicola Paradiso:
    Link between supercurrent diode and anomalous Josephson effect revealed by gate-controlled interferometry
    [arXiv:2308.01061]
  4. Maximilian Fürst, Denis Kochan, Cosimo Gorini, Klaus Richter:
    Dirac Landau levels for surfaces with constant negative curvature
    [arXiv:2307.09221]
  5. Denis Kochan, Andreas Costa, Iaroslav Zhumagulov, Igor Žutić:
    Phenomenological Theory of the Supercurrent Diode Effect: The Lifshitz Invariant
    [arXiv:2303.11975]
Unpublished