Energy spectrum of Bloch electrons under checkerboard field modulations

Ming Che Chang, Min Fong Yang

研究成果: 雜誌貢獻期刊論文同行評審

8 引文 斯高帕斯(Scopus)


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.

期刊Physical Review B - Condensed Matter and Materials Physics
出版狀態已發佈 - 2004 3月 12

ASJC Scopus subject areas

  • 電子、光磁材料
  • 凝聚態物理學


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