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Attila Szilva
Researcher at Uppsala University
Publications - 26
Citations - 476
Attila Szilva is an academic researcher from Uppsala University. The author has contributed to research in topics: Exchange interaction & Magnetic anisotropy. The author has an hindex of 10, co-authored 23 publications receiving 334 citations. Previous affiliations of Attila Szilva include Budapest University of Technology and Economics.
Papers
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Higher-order contributions to the Rashba-Bychkov effect with application to the Bi/Ag(111) surface alloy
Sz. Vajna,Eszter Simon,Eszter Simon,Attila Szilva,Krisztián Palotás,Balazs Ujfalussy,László Szunyogh +6 more
TL;DR: In this article, the authors used k⋅p perturbation theory with a simple group-theoretical analysis and constructed effective Rashba Hamiltonians for different point groups up to third order in the wave number.
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Interatomic Exchange Interactions for Finite-Temperature Magnetism and Nonequilibrium Spin Dynamics
Attila Szilva,Marcio Costa,Marcio Costa,Marcio Costa,Anders Bergman,László Szunyogh,Lars Nordström,Olle Eriksson +7 more
TL;DR: It is demonstrated that keeping this term leads to what one should consider a biquadratic effective spin Hamiltonian even in the case of collinear arrangement, and results in new tensor elements that are important for exchange interactions at finite temperatures, but they have less importance at low temperature.
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Microscopic Origin of Heisenberg and Non-Heisenberg Exchange Interactions in Ferromagnetic bcc Fe
Yaroslav Kvashnin,R. Cardias,Attila Szilva,I. Di Marco,Mikhail I. Katsnelson,Mikhail I. Katsnelson,Alexander I. Lichtenstein,Alexander I. Lichtenstein,Lars Nordström,A. B. Klautau,Olle Eriksson +10 more
TL;DR: The analysis of the nearest-neighbor coupling indicates that the interactions among E_{g} states are mainly proportional to the corresponding hopping integral and thus can be attributed to be of double-exchange origin.
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The Bethe-Slater curve revisited; new insights from electronic structure theory.
R. Cardias,Attila Szilva,Anders Bergman,Igor Di Marco,Mikhail I. Katsnelson,Alexander I. Lichtenstein,Lars Nordström,A. B. Klautau,Olle Eriksson,Yaroslav Kvashnin +9 more
TL;DR: A deeper analysis by comparing 3d metals in the bcc and fcc structures finds that there is no coupling between the Eg orbitals of one atom and T2g orbital of its NNs, for both cubic phases, and demonstrates that these couplings are forbidden by symmetry.
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Anisotropic Rashba splitting of surface states from the admixture of bulk states: Relativistic ab initio calculations and k·p perturbation theory
Eszter Simon,Eszter Simon,Attila Szilva,Balazs Ujfalussy,B. Lazarovits,B. Lazarovits,Gergely Zaránd,László Szunyogh +7 more
TL;DR: In this paper, the surface Rashba effect for a surface of reduced in-plane symmetry was investigated and it was shown that the Rashba splitting is anisotropic, in agreement with symmetry-based considerations.