Nonequilibrium interplay between Andreev bound states and Kondo effect
Nonequilibrium interplay between Andreev bound states and Kondo effect
复制标题
安德列夫束缚态与近藤效应之间的非平衡相互作用
DOI：
10.1103/physrevb.102.075121
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发表时间：
2020-08
影响因子：
3.7
通讯作者：
Qu Fanming
中科院分区：
文献类型：
--
作者：
He Jiangbo;Pan Dong;Yang Guang;Liu Mingli;Ying Jianghua;Lyu Zhaozheng;Fan Jie;Jing Xiunian;Liu Guangtong;Lu Bo;Liu Dong E.;Zhao Jianhua;Lu Li;Qu Fanming
Andreev bound states (ABSs), as a close resemblance and a prototype of Majorana bound states, attracted particular interest in semiconductor-superconductor hybrids. So far, ABSs were explored as an equilibrium behavior employing tunneling spectroscopy. Under nonequilibrium, theorists did predict that the local density of states (DOS) of the ABSs split and broaden. We investigated an InAsSb quantum dot coupled to two superconductors to explore the nonequilibrium dynamics of ABSs and their interplay with Kondo effect. Through tunneling spectroscopy, we demonstrated a full picture of the nonequilibrium dynamic splitting and broadening of ABSs, which interplays with the nonequilibrium Kondo DOS. Since the observed features might mimic those in the normal superconductor-topological superconductor or Majorana junctions, our discovery could provide a relevant comparison to benchmark the Majorana signal in future experiments.
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