Spin-orbit quantum impurity in a topological magnet
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Spin-orbit quantum impurity in a topological magnet. / Yin, Jia-Xin; Shumiya, Nana; Jiang, Yuxiao; Zhou, Huibin; Macam, Gennevieve; Sura, Hano Omar Mohammad; Zhang, Songtian S.; Cheng, Zi-Jia; Guguchia, Zurab; Li, Yangmu; Wang, Qi; Litskevich, Maksim; Belopolski, Ilya; Yang, Xian P.; Cochran, Tyler A.; Chang, Guoqing; Zhang, Qi; Huang, Zhi-Quan; Chuang, Feng-Chuan; Lin, Hsin; Lei, Hechang; Andersen, Brian M.; Wang, Ziqiang; Jia, Shuang; Hasan, M. Zahid.
In: Nature Communications, Vol. 11, No. 1, 4415, 04.09.2020.Research output: Contribution to journal › Journal article › Research › peer-review
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TY - JOUR
T1 - Spin-orbit quantum impurity in a topological magnet
AU - Yin, Jia-Xin
AU - Shumiya, Nana
AU - Jiang, Yuxiao
AU - Zhou, Huibin
AU - Macam, Gennevieve
AU - Sura, Hano Omar Mohammad
AU - Zhang, Songtian S.
AU - Cheng, Zi-Jia
AU - Guguchia, Zurab
AU - Li, Yangmu
AU - Wang, Qi
AU - Litskevich, Maksim
AU - Belopolski, Ilya
AU - Yang, Xian P.
AU - Cochran, Tyler A.
AU - Chang, Guoqing
AU - Zhang, Qi
AU - Huang, Zhi-Quan
AU - Chuang, Feng-Chuan
AU - Lin, Hsin
AU - Lei, Hechang
AU - Andersen, Brian M.
AU - Wang, Ziqiang
AU - Jia, Shuang
AU - Hasan, M. Zahid
PY - 2020/9/4
Y1 - 2020/9/4
N2 - 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 quantized orbitals, exhibiting an intriguing spin-orbit splitting, analogous to the splitting of the topological fermion line. Our work collectively demonstrates the strong spin-orbit effect of the single-atomic impurity at the quantum level, suggesting that a nonmagnetic impurity can introduce spin-orbit coupled magnetic resonance in topological magnets. Single-atomic impurities may induce novel quantum state, but they are unexplored in topological magnets. Here, the authors report spin-down polarized bound states which further interact with neighboring states to form spin-orbit split quantized orbitals in a topological magnet Co3Sn2S2.
AB - 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 quantized orbitals, exhibiting an intriguing spin-orbit splitting, analogous to the splitting of the topological fermion line. Our work collectively demonstrates the strong spin-orbit effect of the single-atomic impurity at the quantum level, suggesting that a nonmagnetic impurity can introduce spin-orbit coupled magnetic resonance in topological magnets. Single-atomic impurities may induce novel quantum state, but they are unexplored in topological magnets. Here, the authors report spin-down polarized bound states which further interact with neighboring states to form spin-orbit split quantized orbitals in a topological magnet Co3Sn2S2.
U2 - 10.1038/s41467-020-18111-6
DO - 10.1038/s41467-020-18111-6
M3 - Journal article
C2 - 32887890
VL - 11
JO - Nature Communications
JF - Nature Communications
SN - 2041-1723
IS - 1
M1 - 4415
ER -
ID: 249163639