0.1meV能量分辨率扫描隧道谱的发展及其在单自旋态探测中的应用

High Resolution Scanning Tunneling Spectroscopy of Magnetic Impurity Induced Bound States in a Superconductor and Its Application in Single Spin States Detection

本研究利用低温扫描隧道显微镜研究了吸附在超导体表面上的磁性杂质诱导的束缚态。通过提高扫描隧道谱的能量分辨率,可以观察到对应于不同角动量散射通道的多重束缚态。该工作提供了一种探测单个自旋态以及研究磁性与超导相互竞争等的灵敏实验手段。

Tunneling spectra for individual atoms and dimers of Mn and Cr adsorbed on superconducting thin films （Pb） 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 demonstrated a spectroscopic approach to characterizing the spin states of magnetic structures and exploring the conductivity and magnetism competition between superat the nanometer scale.