Singular orbital magnetism of graphene

Mikito Koshino, Tsuneya Ando

研究成果: Article査読

22 被引用数 (Scopus)

抄録

The origin of the singular diamagnetic susceptibility at the Dirac point is probed through the study of effects of band-gap opening and spatially varying magnetic field. In the presence of a band gap, the susceptibility is nonzero only inside the band gap and exhibits a discrete jump at the band edges down to zero in the conduction and valence bands. The jump height is understood in terms of the pseudo-spin paramagnetism arising from valley degree of freedom. In spatially varying magnetic field with wave vector q, the susceptibility becomes nonzero only in a finite energy region containing the Dirac point, determined by q. This behavior is understood in terms of electronic states numerically calculated in periodic magnetic field.

本文言語English
ページ(範囲)1054-1060
ページ数7
ジャーナルSolid State Communications
151
16
DOI
出版ステータスPublished - 2011 8月

ASJC Scopus subject areas

  • 化学 (全般)
  • 凝縮系物理学
  • 材料化学

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