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arXiv 0904.3303cond-mat.str-el
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石墨烯中狄拉克费米子的热电功率

Thermo-Electric Power of Dirac Fermions in Graphene

Xin-Zhong Yan, Yousef Romiah, C. S. Ting

摘要:

基于Dirac费米子在带电杂质散射下的自洽Born近似,利用热流-电流关联函数,建立了计算石墨烯中热电功率的理论.本方法的优点是它能够有效地处理低掺杂的情况下,涉及在上和下带的载流子的相干过程变得重要。我们表明,作为载流子浓度和温度的函数的热电功率的低温行为的实验观察到的可以成功地解释我们的计算。

英文摘要:

On the basis of self-consistent Born approximation for Dirac fermions under charged impurity scatterings in graphene, the theory for calculating the thermo-electric power is developed by using the heat current-current correlation function. The advantage of the present approach is its ability to effectively treat the low doping case where the coherence process involving carriers in both upper and lower bands becomes important. We show that the low temperature behavior of the thermo-electric power as function of the carrier concentration and the temperature observed by the experiments can be successfully explained by our calculation.

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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