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arXiv 2103.16925cond-mat.str-el
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有机大质量狄拉克费米子系统中可能的非线性反常Thermoelectric Effect

Possible Nonlinear Anomalous Thermoelectric Effect in Organic Massive Dirac Fermion System

Toshihito Osada, Andhika Kiswandhi

摘要:

提出了一种新的电流感生热电现象--非线性反常艾丁肖森效应(AEE),在零磁场下,在反转非对称导体中。作为一个例子,我们讨论了层状有机导体α-(BEDT-TTF)2 I3中的弱电荷有序态,这是一个具有一对倾斜狄拉克锥的二维大质量狄拉克费米子系统.非线性AEE是最近在α-(BEDT-TTF)2 I3中观察到的非线性反常霍尔效应的热电模拟,并且这两种效应通常同时出现。非线性AEE产生横向热电流,其即使在AC电流下也表现出整流特性,即单向性。

英文摘要:

We propose a novel current-induced thermoelectric phenomenon, the nonlinear anomalous Ettingshausen effect (AEE), at zero magnetic field in inversion-asymmetric conductors. As an example, we discuss the weak charge ordering state in a layered organic conductor alpha-(BEDT-TTF)2I3, which is a two-dimensional massive Dirac fermion system with a pair of tilted Dirac cones. The nonlinear AEE is a thermoelectric analogue of the nonlinear anomalous Hall effect, which is recently observed in alpha-(BEDT-TTF)2I3, and these two effects generally appear simultaneously. The nonlinear AEE generates a transverse heat current, which exhibits rectifying characteristics, namely unidirectionality even under an AC current.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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