...
  • 主题
高级搜索  >
历史搜索 清空历史
首页> 外文期刊>Physical review >Imaging confined charge density oscillations on graphite at room temperature
【24h】

Imaging confined charge density oscillations on graphite at room temperature

机译：在室温下对石墨上的受限电荷密度振荡进行成像

获取原文
获取原文并翻译 | 示例
           
页面导航
  • 摘要
  • 著录项
  • 相似文献
  • 相关主题

摘要

We report the observation of long-range charge density oscillations within the vicinity of superlattice boundaries on graphite at room temperature. These superlattices arise from rotational stacking faults between individual graphene layers on or just below the basal plane. Structural defects in the top graphene layer lead to elastic electron scattering, which is manifest as (i) a √3 superstructure at the atomic scale, and (ii) periodic modulations of the superlattice, at much lower spatial frequencies. The measured corrugation of these modulations is energy dependent and decays with increasing distance away from the defects, consistent with previously reported observations on Friedel oscillations in metals. This presents another charge-scattering mechanism limiting conductivity in honeycomb structures having rotational disorder. An understanding of such electronic modifications has important implications for tailoring the transport properties of future carbon electronics based on few-layer graphene.
机译：我们报告了在室温下石墨上超晶格边界附近的长距离电荷密度振荡的观察。这些超晶格是由基础平面上或正下方的单个石墨烯层之间的旋转堆叠缺陷引起的。顶层石墨烯层中的结构缺陷导致弹性电子散射，这表现为（i）原子级的√3超结构，以及（ii）在低得多的空间频率下超晶格的周期性调制。这些调制的测量波纹与能量有关，并且随着距缺陷的距离的增加而衰减，这与先前报道的有关金属中弗瑞德振荡的观察结果一致。这提出了另一种电荷散射机制，该机制限制了具有旋转紊乱的蜂窝结构中的导电性。对此类电子修饰的理解对于调整未来基于多层石墨烯的碳电子器件的传输性能具有重要意义。

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