...
  • 主题
高级搜索  >
历史搜索 清空历史
首页> 外文期刊>ACS nano >Probing the Magnetism of Topological End States in 5-Armchair Graphene Nanoribbons
【24h】

Probing the Magnetism of Topological End States in 5-Armchair Graphene Nanoribbons

机译：5扶手椅石墨烯纳米队探测拓扑末端状态的磁

获取原文
获取原文并翻译 | 示例
   

获取外文期刊封面封底 >>

       
页面导航
  • 摘要
  • 著录项
  • 相似文献
  • 相关主题

摘要

We extensively characterize the electronic structure of ultranarrow graphene nanoribbons (GNRs) with armchair edges and zigzag termini that have five carbon atoms across their width (5-AGNRs), as synthesized on Au(111). Scanning tunneling spectroscopy measurements on the ribbons, recorded on both the metallic substrate and a decoupling NaCl layer, show well-defined dispersive bands and in-gap states. In combination with theoretical calculations, we show how these in-gap states are topological in nature and localized at the zigzag termini of the nanoribbons. In addition to rationalizing the driving force behind the topological class selection of S-AGNRs, we also uncover the length-dependent behavior of these end states which transition from singly occupied spin-split states to a closed-shell form as the ribbons become shorter. Finally, we demonstrate the magnetic character of the end states via transport experiments in a model two-terminal device structure in which the ribbons are suspended between the scanning probe and the substrate that both act as leads.
机译：我们广泛地表征了用扶手椅边缘和Z字形末端的超arranarrow石墨烯纳米杆（GNR）的电子结构，其在其宽度（5- agnrs）上具有五个碳原子，如au（111）的合成。扫描在金属基板和去耦NaCl层上记录的带上的带扫描隧道光谱测量，显示出明确定义的分散带和间隙状态。与理论计算结合，我们展示了这些缺口的状态如何是自然界的拓扑，并在纳米波巴的之字形末端定位。除了在S-AGNS的拓扑阶级选择背后的驱动力之外，我们还发现这些端部状态的长度依赖性行为，随着带较短，将从单独占据的旋转状态转换为闭式壳形式。最后，我们通过在模型双端子装置结构中通过运输实验证明了终端状态的磁特性，其中带子悬浮在扫描探针和衬底之间的扫描探针和衬底中的衬底。

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