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Anomalous magneto-thermoelectric transport in biased bilayer phosphorene
The European Physical Journal B ( IF 1.6 ) Pub Date : 2021-04-29 , DOI: 10.1140/epjb/s10051-021-00105-y
R. Ma , H. T. Cao , L. Wang

We numerically study the thermoelectric transport properties in bilayer phosphorene in the presence of bias voltage under a strong magnetic field. When a bias voltage is applied and the bulk energy gap is closed, it is found that thermoelectric coefficients has similar properties to those of a semimetal. Around the central Landau Level (LL), the transverse thermoelectric conductivity displays a series of peaks, but the longitudinal thermoelectric conductivity oscillates and changes sign. The Nernst signal has a peak at central LL and changes sign near other LLs, while the thermopower has an opposite behavior. Both the thermoelectric conductivities and Nernst signal exhibit remarkable anisotropy, but thermopower exhibits isotropy.



中文翻译:

偏置双层磷中的异常磁热电输运

我们在强磁场下存在偏压的情况下,对双层磷中的热电输运性质进行了数值研究。发现当施加偏置电压并且缩小整体能隙时,发现热电系数具有与半金属相似的性质。在中央兰道水平面(LL)周围,横向热导率显示出一系列峰值,但纵向热导率振荡并改变符号。能斯特信号在中心LL处有一个峰值,并在其他LL附近改变符号,而热电的行为却相反。热电导率和能斯特信号均表现出显着的各向异性,而热电则表现出各向同性。

更新日期:2021-04-30
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