arXivDaily arXiv每日学术速递 周一至周五更新
arXiv周末暂无论文更新,休息一下吧,周末愉快~~
arXiv 0906.0188cond-mat.mes-hall
收藏

高电流极限下石墨烯的输运性质

Transport properties of graphene in the high-current limit

Amelia Barreiro, Michele Lazzeri, Joel Moser, Francesco Mauri, Adrian Bachtold

摘要:

我们提出了一个详细的研究,在四点配置图案化的石墨烯器件的高电流传输特性。随着石墨烯两端的电压增加,电流趋于饱和,但永远不会达到金属纳米管中的完全饱和。测量结果进行了比较的玻尔兹曼方程,其中包括电子散射过程,由于带电和中性杂质,和石墨烯光学声子的基础上的模型。由于无序与光-声子散射之间的竞争,这种饱和是不完全的。

英文摘要:

We present a detailed study of the high-current transport properties of graphene devices patterned in a four-point configuration. The current tends to saturate as the voltage across graphene is increased but never reaches the complete saturation as in metallic nanotubes. Measurements are compared to a model based on the Boltzmann equation, which includes electron scattering processes due to charged and neutral impurities, and graphene optical-phonons. The saturation is incomplete because of the competition between disorder and optical-phonon scattering.

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。

↑