...
首页> 外文期刊>Physical review. B, Condensed Matter And Materials Physics >Room-temperature ballistic transport in narrow graphene strips
【24h】

Room-temperature ballistic transport in narrow graphene strips

机译:窄石墨烯条中的室温弹道运输

获取原文
获取原文并翻译 | 示例
           

摘要

We investigate electron-phonon couplings, scattering rates, and mean free paths in zigzag-edge graphene strips with widths of the order of 10 nm. Our calculations for these graphene nanostrips show both the expected similarity with single-wall carbon nanotubes (SWNTs) and the suppression of the electron-phonon scattering due to a Dirichlet boundary condition that prohibits one major backscattering channel present in SWNTs. Low-energy acoustic phonon scattering is exponentially small at room temperature due to the large phonon wave vector required for backscattering. We find within our model that the electron-phonon mean free path is proportional to the width of the nanostrip and is approximately 70 μm for an 11-nm-wide nanostrip.
机译:我们研究了宽度为10 nm的锯齿形边缘石墨烯带中的电子-声子耦合,散射率和平均自由程。我们对这些石墨烯纳米带的计算既显示了与单壁碳纳米管(SWNT)的预期相似性,又显示了由于Dirichlet边界条件而导致的电子声子散射抑制,该条件阻止了SWNT中存在一个主要的反向散射通道。由于背向散射需要大的声子波矢量,因此低能声子在室温下的散射指数小。我们在模型中发现,电子-声子的平均自由程与纳米带的宽度成正比,并且对于11纳米宽的纳米带,约为70μm。

著录项

相似文献

  • 外文文献
  • 中文文献
  • 专利
获取原文

客服邮箱:kefu@zhangqiaokeyan.com

京公网安备:11010802029741号 ICP备案号:京ICP备15016152号-6 六维联合信息科技 (北京) 有限公司©版权所有
  • 客服微信

  • 服务号