Electron correlation induced spontaneous symmetry breaking and weyl semimetal phase in a strongly spin-orbit coupled system

Akihiko Sekine, Kentaro Nomura

研究成果: Article査読

21 被引用数 (Scopus)

抄録

We study theoretically the electron correlation effect in a three-dimensional (3D) Dirac fermion system which describes a topologically nontrivial state. It is shown within the mean-field approximation that time-reversal and inversion symmetries of the system are spontaneously broken in the region where both spin-orbit coupling and electron correlation are strong. This phase is considered as a condensed-matter analog of the corresponding phase in the lattice quantum chromodynamics (QCD). It is also shown that in the presence of magnetic impurities, electron correlation enhances the appearance of the Weyl semimetal phase between the topological insulator phase and the normal insulator phase.

本文言語English
論文番号033702
ジャーナルjournal of the physical society of japan
82
3
DOI
出版ステータスPublished - 2013 3月

ASJC Scopus subject areas

  • 物理学および天文学(全般)

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