Thermoelectric Transport Coefficients for Massless Dirac Electrons in Quantum Limit
Thermoelectric Transport Coefficients for Massless Dirac Electrons in Quantum Limit
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DOI：
10.7566/jpsj.82.063712
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发表时间：
2013-05
影响因子：
1.7
通讯作者：
I. Proskurin;M. Ogata
中科院分区：
文献类型：
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作者：
I. Proskurin;M. Ogata
本文利用基于Kubo-Stadereda公式和推广的Mott关系式的方法，对无质量Dirac电子的热电输运系数进行了解析计算。这封信的主要重点是能斯特系数在量子极限狄拉克点附近的性质。计算了能斯特系数随磁场和温度的变化关系，并与最近α-（BEDT-TTF）_2I_3有机导体的实验结果进行了比较。我们认为，塞曼分裂是重要的理解在高磁场下的实验数据。
We perform an analytic calculation of thermoelectric transport coefficients for massless Dirac electrons using the approach based on the Kubo–Středa formula and generalized Mott's relation. The main focus of the letter is made on the properties of the Nernst coefficient in the vicinity of the Dirac point in quantum limit. We calculate magnetic field and temperature dependencies of the Nernst coefficient and compare our results with recent experiments in α-(BEDT-TTF)2I3 organic conductor. We argue that the Zeeman splitting is important to understand the experimental data at high magnetic fields.