arXivDaily arXiv每日学术速递 周一至周五更新
arXiv 1003.4731cond-mat.mes-hallcond-mat.mtrl-sci
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二维石墨烯中的电子输运

Electronic transport in two dimensional graphene

S. Das Sarma, Shaffique Adam, E. H. Hwang, Enrico Rossi

摘要:

我们提供了一个广泛的审查的基本电子性质的二维石墨烯的密度和温度依赖的载流子输运掺杂或门控石墨烯结构的重点。我们的评论的一个显着特点是在石墨烯和二维半导体系统(例如异质结构,量子阱,反型层)的载流子输运之间的关键比较,使石墨烯的电子性质的独特功能所产生的无间隙,无质量,手性狄拉克光谱突出。实验和理论,以及量子和半经典运输的协同方式进行了讨论,以提供一个统一和全面的观点。虽然审查的重点是在那些方面的石墨烯运输存在合理的共识,在文献中,开放的问题进行了讨论。深入描述了控制传输的各种物理机制,包括长程带电杂质散射、屏蔽、短程缺陷散射、声子散射、多体效应、克莱因隧穿、狄拉克点处的最小电导率、电子-空穴水坑形成、pn结、局部化、逾渗、量子经典交叉、中间带隙状态、量子霍尔效应和其他现象。

英文摘要:

We provide a broad review of fundamental electronic properties of two-dimensional graphene with the emphasis on density and temperature dependent carrier transport in doped or gated graphene structures. A salient feature of our review is a critical comparison between carrier transport in graphene and in two-dimensional semiconductor systems (e.g. heterostructures, quantum wells, inversion layers) so that the unique features of graphene electronic properties arising from its gap- less, massless, chiral Dirac spectrum are highlighted. Experiment and theory as well as quantum and semi-classical transport are discussed in a synergistic manner in order to provide a unified and comprehensive perspective. Although the emphasis of the review is on those aspects of graphene transport where reasonable consensus exists in the literature, open questions are discussed as well. Various physical mechanisms controlling transport are described in depth including long- range charged impurity scattering, screening, short-range defect scattering, phonon scattering, many-body effects, Klein tunneling, minimum conductivity at the Dirac point, electron-hole puddle formation, p-n junctions, localization, percolation, quantum-classical crossover, midgap states, quantum Hall effects, and other phenomena.

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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