Integer quantum Hall effect in isotropic three-dimensional crystals

M. Koshino, H. Aoki

研究成果: Article査読

19 被引用数 (Scopus)

抄録

We show that a series of energy gaps as in Hofstadter’s butterfly, which have been shown to exist by Koshino et al. [Phys. Rev. Lett. 86, 1062 (2001)] for anisotropic three-dimensional periodic systems in magnetic fields B, also arise in the isotropic case unless B points in high-symmetry crystallographic directions. Accompanying integer quantum Hall conductivities (σxy, σyz, σzx) can, surprisingly, take values ∝ (1, 0, 0), (0, 1, 0), (0, 0, 1) even for a fixed direction of B unlike in the anisotropic case. We also propose here to intuitively explain the spectra and the quantization of the Hall conductivity in terms of the quantum-mechanical hopping between semiclassical orbits in the momentum space, which is usually ignored for weak magnetic fields.

本文言語English
ジャーナルPhysical Review B - Condensed Matter and Materials Physics
67
19
DOI
出版ステータスPublished - 2003 5 30

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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