## 摘要

The energy spectra of spin-(Formula presented) electrons under two-dimensional magnetic field modulations are calculated beyond the one-band approximation. Our formulation is generally applicable to a modulation field with a rectangular lattice symmetry. The field distribution within a plaquette is otherwise arbitrary. The spectra being obtained are qualitatively different from their electric-modulated counterparts. Peculiar features of the spectra are that, for an electron with a (Formula presented) factor precisely equal to 2, no matter how strong the modulation is, the zero-energy level seems to be unaffected by the modulation and is separated from higher energy levels with a nonzero energy gap. Moreover, there is a twofold degenerancy for all states with positive energies with respect to spin flip. These features agree with earlier analytical studies of the periodically magnetic-modulated systems.

原文 | 英語 |
---|---|

頁（從 - 到） | 13002-13009 |

頁數 | 8 |

期刊 | Physical Review B - Condensed Matter and Materials Physics |

卷 | 57 |

發行號 | 20 |

DOIs | |

出版狀態 | 已發佈 - 1998 |

對外發佈 | 是 |

## ASJC Scopus subject areas

- 電子、光磁材料
- 凝聚態物理學