title: High-resolution scanning tunneling spectroscopy of magnetic impurity induced bound states in the superconducting gap of Pb thin films.
abstract: Tunneling spectra for individual atoms and dimers of Mn and Cr adsorbed on superconducting Pb thin films were measured by a low temperature scanning tunneling microscope. Multiple-resonance structures within the superconducting gap on the adsorbates were resolved and interpreted as the magnetic impurity-induced bound states associated with different scattering channels. The experiment demonstrates a spectroscopic approach to characterizing the spin states of magnetic structures and exploring the competition between superconductivity and magnetism at the nanometer scale.
authors.affiliation: Department of Physics, Tsinghua University, Beijing 100084, China.
authors.forename: Shuai-Hua
authors.initials: SH
authors.lastname: Ji
authors.forename: Tong
authors.initials: T
authors.lastname: Zhang
authors.forename: Ying-Shuang
authors.initials: YS
authors.lastname: Fu
authors.forename: Xi
authors.initials: X
authors.lastname: Chen
authors.forename: Xu-Cun
authors.initials: XC
authors.lastname: Ma
authors.forename: Jia
authors.initials: J
authors.lastname: Li
authors.forename: Wen-Hui
authors.initials: WH
authors.lastname: Duan
authors.forename: Jin-Feng
authors.initials: JF
authors.lastname: Jia
authors.forename: Qi-Kun
authors.initials: QK
authors.lastname: Xue