...
首页> 外文期刊>Physical review >Electron-phonon interactions in buayer graphene
【24h】

Electron-phonon interactions in buayer graphene

机译:buayer石墨烯中的电子-声子相互作用

获取原文
获取原文并翻译 | 示例
           

摘要

Using calculations from first principles, we demonstrate that intrinsic carrier-phonon scattering in bilayer graphene is dominated by low-energy acoustic (and acousticlike) phonon modes in a framework that bears more resemblance to bulk graphite than to monolayer graphene. The total scattering rate at low to moderate electron energies can be described by a simple two-phonon model in the deformation potential approximation with effective constants D_(ac)≈ 15 eV and D_(op)≈ 2.8 × 10~8 eV/cm for acoustic and optical phonons, respectively. With much enhanced acoustic phonon scattering, the mobility of intrinsic bilayer graphene is estimated to be significantly smaller than that of the monolayer.
机译:使用第一性原理的计算结果,我们证明了双层石墨烯中的固有载流子-声子散射主要由低能声(和类声学)声子模态主导,该构架与本体石墨比与单层石墨烯具有更大的相似性。低至中等电子能量下的总散射率可以通过简单的两声子模型描述,其形变电势近似为有效常数D_(ac)≈15eV和D_(op)≈2.8×10〜8 eV / cm。声子和声子随着声子声子散射的增强,本征双层石墨烯的迁移率估计显着小于单层迁移率。

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