Low-energy landau level spectrum in ABC-stacked trilayer graphene

Ching Hong Ho, Sing Jyun Tsai, Rong Bin Chen, Yu Huang Chiu, Ming Fa Lin

研究成果: Article同行評審

9 引文 斯高帕斯(Scopus)

摘要

The low-lying Landau level (LL) properties of ABC-stacked trilayer graphene are investigated by the tight-binding (TB) model. The LL spectra exhibit an asymmetric structure around the Fermi level and three finely split LLs close to the Fermi level. The LL wave functions are described by six magnetic TB Bloch functions associated with six sublattices. These Bloch functions possess oscillation modes and localization features. An effective quantum number, which is used to define a LL, is defined by the oscillation mode of the Bloch function with the largest amplitude. The LL energies in the low-field and high-field regions exhibit different features since the trigonal warping effect strongly dominates the LL properties in the low-field region. Furthermore, the LLs do not present a simple relation between the magnetic field strength (effective quantum number) and the LL energy. A detailed comparison of the calculation with all atomic interactions taken into account and that ignoring some interlayer interactions is offered. The dissimilarities between these two calculations demonstrate that interlayer interactions strongly affect the main features of LLs and should not be ignored. The dissimilarities could be further examined by experimental measurements.

原文English
頁(從 - 到)4938-4947
頁數10
期刊Journal of Nanoscience and Nanotechnology
11
發行號6
DOIs
出版狀態Published - 2011 12月 1

All Science Journal Classification (ASJC) codes

  • 生物工程
  • 一般化學
  • 生物醫學工程
  • 一般材料科學
  • 凝聚態物理學

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