...
  • 主题
高级搜索  >
历史搜索 清空历史
首页> 外文期刊>Physical review >Josephson effect in two-band superconductors
【24h】

Josephson effect in two-band superconductors

机译：Josephson在双频超导体中的影响

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 study theoretieally the Josephson effect between two two-band superconductors respecting time-reversal symmetry, where we assume a spin-singlet s-wave pair potential in each conduction band. The superconducting phase at the first band ψ1 and that at the second band ψ2 characterize a two-band superconducting state. We consider a Josephson junction where an insulating barrier separates two such two-band superconductors. By applying the tunnel Hamiltonian description, the Josephson current is calculated in terms of the anomalous Green's function on either side of the junction. We find that the Josephson current consists of three components which depend on three types of phase differences across the junction: the phase difference at the first band δ_(ψ1), the phase difference at the second band δ_(ψ2), and the difference at the center-of-mass phase (δ_(ψ1)+δ_(ψ2))/2. A Cooper pair generated by the band hybridization carries the last current component. We discuss the relation between the Josephson current calculated in theories and that observed in experiments.
机译：我们研究了两种双频超导体之间的约瑟夫森效应，各自反转对称，在每个传导频带中假设旋转态S波对电位。第一带ψ1处的超导阶段，并且在第二带χ2处表征了双频超导状态。我们考虑一个Josephse one结，其中绝缘屏障分离两个这样的双频带超导体。通过应用隧道Hamiltonian描述，Josephson电流是根据交叉点两侧的异常绿色功能计算的。我们发现，Josephson电流由三个组件组成，这三个组件依赖于接合点的三种相差：第一频段Δ_（ψ1）的相位差，第二带Δ_（ψ2）处的相位差，以及差异中心相（Δ_（χ1）+Δ_（ψ2））/ 2。由频带杂交产生的Cooper对携带最后一个电流分量。我们讨论了在理论中计算的Josephson电流与实验中观察到的关系。

著录项

  • 来源
    《Physical review》 |2020年第18期|184501.1-184501.6|共6页
  • 作者

    Akihiro Sasaki; Satoshi Ikegaya; Tetsuro Habe; Alexander A. Golubov; Yasuhiro Asano;

  • 作者单位

    Department of Applied Physics Hokkaido University Sapporo 060-8628 Japan;

    Max-Planck-Institut fuer Eestkoerperforschung Heisenbergstrasse 1 D-70569 Stuttgart Germany;

    Department of Applied Physics Hokkaido University Sapporo 060-8628 Japan;

    National Research University Higher School of Economics 101000 Moscow Russia Faculty of Science and Technology and MESA+ Institute for Nanotechnology University of Twente 7500 AE Enschede The Netherlands;

    Department of Applied Physics Hokkaido University Sapporo 060-8628 Japan Center of Topological Science and Technology Hokkaido University Sapporo 060-8628 Japan;

  • 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