Ji Shuai-Hua, Zhang Tong, Fu Ying-Shuang, Chen Xi, Ma Xu-Cun, Li Jia, Duan Wen-Hui, Jia Jin-Feng, Xue Qi-Kun
Department of Physics, Tsinghua University, Beijing 100084, China.
Phys Rev Lett. 2008 Jun 6;100(22):226801. doi: 10.1103/PhysRevLett.100.226801. Epub 2008 Jun 5.
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.
利用低温扫描隧道显微镜测量了吸附在超导铅薄膜上的锰和铬的单个原子及二聚体的隧穿谱。解析了吸附质超导能隙内的多重共振结构，并将其解释为与不同散射通道相关的磁性杂质诱导束缚态。该实验展示了一种光谱学方法，用于表征磁性结构的自旋态，并在纳米尺度上探索超导与磁性之间的竞争。
