Moire butterflies in twisted bilayer graphene
Moire butterflies in twisted bilayer graphene
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DOI：
10.1103/physrevb.84.035440
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发表时间：
2011-07-27
影响因子：
3.7
通讯作者：
MacDonald, A. H.
中科院分区：
文献类型：
--
作者：
Bistritzer, R.;MacDonald, A. H.
晶格电子在外部磁场中的霍夫施塔特蝴蝶光谱模式产生了物理学中一些最迷人的图像。在这里，我们探讨的磁电子光谱系统的莫尔空间图案，集中在扭曲的双层石墨烯的情况下。由于长周期的空间图案准确地形成在小的扭转角，分形蝴蝶谱和相关的磁输运和磁力异常出现在可访问的磁场强度。
The Hofstadter butterfly spectral patterns of lattice electrons in an external magnetic field yield some of the most beguiling images in physics. Here we explore the magnetoelectronic spectra of systems with moire spatial patterns, concentrating on the case of twisted bilayer graphene. Because long-period spatial patterns are accurately formed at small twist angles, fractal butterfly spectra and associated magnetotransport and magnetomechanical anomalies emerge at accessible magnetic field strengths.