Spin-orbit quantum impurity in a topological magnet.

ABSTRACT: Quantum states induced by single-atomic impurities are at the frontier of physics and material science. While such states have been reported in high-temperature superconductors and dilute magnetic semiconductors, they are unexplored in topological magnets which can feature spin-orbit tunability. Here we use spin-polarized scanning tunneling microscopy/spectroscopy (STM/S) to study the engineered quantum impurity in a topological magnet Co₃Sn₂S₂. We find that each substituted In impurity introduces a striking localized bound state. Our systematic magnetization-polarized probe reveals that this bound state is spin-down polarized, in lock with a negative orbital magnetization. Moreover, the magnetic bound states of neighboring impurities interact to form quant

SUBMITTER: Yin JX 

PROVIDER: S-EPMC7474094 | biostudies-literature | 2020 Sep

REPOSITORIES: biostudies-literature