...
首页> 外文期刊>Physical review >Spin exchange interaction with tunable range between graphene quantum dots
【24h】

Spin exchange interaction with tunable range between graphene quantum dots

机译:自旋交换相互作用与石墨烯量子点之间的可调范围

获取原文
获取原文并翻译 | 示例
           

摘要

We study the spin exchange between two electrons localized in separate quantum dots in graphene. The electronic states in the conduction band are coupled indirectly by tunneling to a common continuum of delocalized states in the valence band. As a model, we use a two-impurity Anderson Hamiltonian which we subsequently transform into an effective spin Hamiltonian by way of a two-stage Schrieffer-Wolff transformation. We then compare our result to that from a Coqblin-Schrieffer approach as well as to fourth-order perturbation theory.
机译:我们研究了位于石墨烯中单独的量子点中的两个电子之间的自旋交换。导带中的电子态通过隧穿间接耦合到价带中一个常见的离域态连续体。作为模型,我们使用两个杂质的安德森哈密顿量,随后通过两阶段Schrieffer-Wolff变换将其转化为有效的自旋哈密顿量。然后,我们将我们的结果与Coqblin-Schrieffer方法的结果以及四阶微扰理论进行比较。

著录项

  • 来源
    《Physical review》 |2011年第11期|p.1226-1232|共7页
  • 作者单位

    Institute of Theoretical Physics C, RWTH Aachen University, D-52056 Aachen, Germany and Department of Physics, University of Konstanz, D-78457 Konstanz, Germany;

    Institute of Theoretical Physics C, RWTH Aachen University, D-52056 Aachen, Germany and Department of Physics, University of Konstanz, D-78457 Konstanz, Germany;

    Institute of Theoretical Physics C, RWTH Aachen University, D-52056 Aachen, Germany and Department of Physics, University of Konstanz, D-78457 Konstanz, Germany;

  • 收录信息
  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类
  • 关键词

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