High-Resolution Scanning Tunneling Spectroscopy of Magnetic Impurity Induced Bound States in the Superconducting Gap of Pb Thin Films

Shuai-Hua Ji; Tong Zhang; Ying-Shuang Fu; Xi Chen; Xu-Cun Ma; Jia Li; Wen-Hui Duan; Jin-Feng Jia; Qi-Kun Xue

doi:10.1103/PhysRevLett.100.226801

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High-Resolution Scanning Tunneling Spectroscopy of Magnetic Impurity Induced Bound States in the Superconducting Gap of Pb Thin Films

Shuai-Hua Ji, Tong Zhang, Ying-Shuang Fu, Xi Chen, Xu-Cun Ma, Jia Li, Wen-Hui Duan, Jin-Feng Jia, Qi-Kun Xue

DOI 10.1103/PhysRevLett.100.226801 · Physical Review Letters

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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.

Source-reported materials — not catalogue approval

Formula	Reported Tc (K)	Pressure (GPa)	Type
Pb Archive — visibility unverified Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula.	—	Pressure not reported	unknown