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Please use this identifier to cite or link to this item: https://elib.bsu.by/handle/123456789/163116
Title: Semimetals with Fermi Velocity A˙ected by Exchange Interactions: Two Dimensional Majorana Charge Carriers
Authors: Grushevskaya, H. V.
Krylov, G.
Issue Date: 2015
Publisher: Minsk : Education and Upbringing
Citation: Nonlinear Phenomena in Complex Systems. - 2015. - Vol. 18, N 2. - P. 266-283
Abstract: A theoretical approach to the band theory of two-dimensional (2D) semimetals within the self-consistent Dirac–Hartree–Fock field approximation has been developed. It reveals partially breaking symmetry of Dirac cone a˙ected by quasi-relativistic exchange interactions for 2D crystals with hexagonal symmetry. Fermi velocity becomes an operator within this approach, elementary excitations are three-particle fermionic excitons described by Majorana rather than Dirac equation. Such features of the band structure of 2D semimetals as appearance of 4 pairs of Weyl-like nodes and Dirac cone replicas is shown to be naturally explained with the developed formalism.
URI: http://elib.bsu.by/handle/123456789/163116
ISSN: 1561 - 4085
Appears in Collections:2015. Volume 18. Number 2

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