Quantum criticalities induced by Lifshitz transitions

Youhei Yamaji*, Takahiro Misawa, Masatoshi Imada

*この研究の対応する著者

研究成果: Article査読

6 被引用数 (Scopus)

抄録

We study electron correlation effects on quantum criticalities of Lifshitz transitions (LTs), using the mean-field theory based on a preexisting broken symmetry order, in two-dimensional systems. In the presence of interactions, LTs may become discontinuous in contrast to the continuous transition in the original proposal by Lifshitz for noninteracting systems. We find that the quantum criticality at the endpoint of discontinuous LTs, which we call the marginal quantum critical point, belongs to a different universality class from that of the mean-field Ising model.

本文言語English
ページ(範囲)838-840
ページ数3
ジャーナルJournal of Magnetism and Magnetic Materials
310
2 SUPPL. PART 1
DOI
出版ステータスPublished - 2007 3月 1
外部発表はい

ASJC Scopus subject areas

  • 電子材料、光学材料、および磁性材料
  • 凝縮系物理学

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