期刊
PROGRESS IN SURFACE SCIENCE
卷 93, 期 1, 页码 1-19出版社
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.progsurf.2018.01.001
关键词
Yu-Shiba-Rusinov states; Superconductor; Magnetic impurity; Scanning tunneling microscopy; Andreev bound states
资金
- Deutsche Forschungsgemeinschaft [FR2726/4, HE7368/2]
- European Research Council through Consolidator Grant NanoSpin
In superconductors, magnetic impurities induce a pair-breaking potential for Cooper pairs, which locally affects the Bogoliubov quasiparticles and gives rise to Yu-Shiba-Rusinov (YSR or Shiba, in short) bound states in the density of states (DoS). These states carry information on the magnetic coupling strength of the impurity with the superconductor, which determines the many-body ground state properties of the system. Recently, the interest in Shiba physics was boosted by the prediction of topological superconductivity and Majorana modes in magnetically coupled chains and arrays of Shiba impurities. Here, we review the physical insights obtained by scanning tunneling microscopy into single magnetic adsorbates on the s-wave superconductor lead (Pb). We explore the tunneling processes into Shiba states, show how magnetic anisotropy affects many-body excitations, and determine the crossing of the many-body ground state through a quantum phase transition. Finally, we discuss the coupling of impurities into dimers and chains and their relation to Majorana physics.
作者
我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。
推荐
暂无数据