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Magnetic breakdown investigated by means of the magnetic-field-containing relativistic tight-binding approximation method

机译：利用含磁场的相对论紧束缚近似方法研究磁击穿

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摘要

We investigate the magnetic breakdown (MB) phenomena by means of the recently proposed magnetic-field-containing relativistic tight-binding approximation (MFRTB) method [Phys. Rev. B 91, 075122 (2015)]. In the MFRTB method, the MB phenomena can be described as the electron hopping between adjacent semiclassical orbits. It is shown that a set of magnetic energy bands is generated by the MB in the cluster that corresponds to the semiclassical energy level. It is also found that magnetic energy bands originating from the MB and those originating from the semiclassical orbit lying on the constant energy surface are hybridized to each other. Such hybridization leads to various subclusters that correspond to energy states of the so-called forbidden orbits. Magnetic oscillations related to the MB occur when the subcluster changes from the occupied state to unoccupied one and vice versa.
机译：我们通过最近提出的含磁场的相对论紧密结合近似（MFRTB）方法来研究磁击穿（MB）现象。 B 91，075122（2015）。在MFRTB方法中，MB现象可描述为相邻半经典轨道之间的电子跳跃。结果表明，簇中的MB产生了一组与半经典能级相对应的磁能带。还发现，源自MB的磁能带和源自位于恒定能量表面上的半经典轨道的磁能带彼此杂交。这种杂化导致对应于所谓的禁止轨道的能量状态的各种子簇。当子集群从已占用状态变为未占用状态时，会发生与MB相关的磁振荡，反之亦然。

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  • 来源
    《Physical review》 |2017年第23期|235125.1-235125.9|共9页
  • 作者

    Katsuhiko Higuchi; Dipendra Bahadur Hamal; Masahiko Higuchi;

  • 作者单位

    Graduate School of Advanced Sciences of Matter, Hiroshima University, Higashi-Hiroshima 739-8527, Japan;

    Department of Natural Sciences (Physics), Kathmandu University, Dhulikhel, Kavre 6250, Nepal;

    Department of Physics, Faculty of Science, Shinshu University, Matsumoto 390-8621, Japan;

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