Energy spectrum of Bloch electrons under checkerboard field modulations

Ming Che Chang, Min Fong Yang

研究成果: 雜誌貢獻文章

8 引文 斯高帕斯(Scopus)

摘要

Two-dimensional Bloch electrons in a uniform magnetic field exhibit a complex energy spectrum. When static electric and magnetic modulations with a checkerboard pattern are superimposed on the uniform magnetic field, more structures and symmetries of the spectra are found, due to the additional adjustable parameters from the modulations. We give a comprehensive report on these symmetries. We have also found an electric-modulation induced energy gap, whose magnitude is independent of the strength of either the uniform or the modulated magnetic field. This study is applicable to experimentally accessible systems and is related to the investigations on frustrated antiferromagnetism.

原文英語
期刊Physical Review B - Condensed Matter and Materials Physics
69
發行號11
DOIs
出版狀態已發佈 - 2004 三月 12

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics

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