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arXiv 0708.3239cond-mat.mtrl-scicond-mat.mes-hall
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石墨烯中的电子-电子相互作用

Electron-Electron Interactions in Graphene

S. Das Sarma, Ben Yu-Kuang Hu, E. H. Hwang, Wang-Kong Tse

摘要:

讨论了在弱耦合($r_s \ll 1$)极限下计算石墨烯自能的环图近似(RPA)的有效性,表明RPA对于费米能级远离狄拉克点的\textit{extrinsic}石墨烯是一个可控的有效近似.

英文摘要:

We discuss the validity (or not) of the ring-diagram approximation (i.e. RPA) in the calculation of graphene self-energy in the weak-coupling ($r_s \ll 1$) limit, showing that RPA is a controlled and valid approximation for \textit{extrinsic} graphene where the Fermi level is away from the Dirac point.

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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