Skip to main content
OSTI.GOVU.S. Department of Energy Office of Scientific and Technical Information
U.S. Department of Energy
Office of Scientific and Technical Information
 

Spin-orbit quantum impurity in a topological magnet

Journal Article · · Nature Communications
 [1];  [1];  [1];  [2];  [3];  [4];  [1];  [1];  [5];  [6];  [7];  [1];  [1];  [1];  [1];  [1];  [1];  [3];  [3];  [8] more »;  [7];  [4];  [9];  [2];  [10] « less
  1. Princeton Univ., NJ (United States)
  2. Peking Univ., Beijing (China)
  3. Sun Yat-Sen Univ., Guangzhou (China)
  4. Copenhagen Univ. (Denmark)
  5. Princeton Univ., NJ (United States); Paul Scherrer Inst. (PSI), Villigen (Switzerland)
  6. Brookhaven National Lab. (BNL), Upton, NY (United States)
  7. Renmin Univ. of China, Beijing (China)
  8. Academia Sinica, Taipei (Taiwan)
  9. Boston College, Chestnut Hill, MA (United States)
  10. Princeton Univ., NJ (United States); Lawrence Berkeley National Lab. (LBNL), Berkeley, CA (United States)
+ Show Author Affiliations
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.
Research Organization:
Lawrence Berkeley National Laboratory (LBNL), Berkeley, CA (United States)
Sponsoring Organization:
Chinese Academy of Sciences (CAS); Gordon and Betty Moore Foundation; Independent Research Fund Denmark; Ministry of Science and Technology of Taiwan; National Center for Theoretical Sciences; National Key R&D Program of China; National Natural Science Foundation of China (NNSFC); National Science Foundation (NSF); Renmin University of China; USDOE Office of Science (SC), Basic Energy Sciences (BES) (SC-22)
Grant/Contract Number:
AC02-05CH11231; FG02-05ER46200; FG02-99ER45747
OSTI ID:
1676391
Journal Information:
Nature Communications, Journal Name: Nature Communications Journal Issue: 1 Vol. 11; ISSN 2041-1723
Publisher:
Nature Publishing GroupCopyright Statement
Country of Publication:
United States
Language:
English

References (40)

Half Antiperovskites. III. Crystallographic and Electronic Structure Effects in Sn2−xInxCo3S2 journal July 2006
Berry Phases in Electronic Structure Theory January 2018
Interplay of Metal-Atom Ordering, Fermi Level Tuning, and Thermoelectric Properties in Cobalt Shandites Co 3 M 2 S 2 (M = Sn, In) journal May 2015
Imaging the effects of individual zinc impurity atoms on superconductivity in Bi2Sr2CaCu2O8+δ journal February 2000
Atom-by-atom substitution of Mn in GaAs and visualization of their hole-mediated interactions journal July 2006
Visualizing heavy fermions emerging in a quantum critical Kondo lattice journal June 2012
Emergent phenomena induced by spin–orbit coupling at surfaces and interfaces journal November 2016
Reading and writing single-atom magnets journal March 2017
A single-atom transistor journal February 2012
Quantum dots with single-atom precision journal June 2014
Observation of a robust zero-energy bound state in iron-based superconductor Fe(Te,Se) journal June 2015
The physics of quantum materials journal October 2017
Tunable anomalous Hall conductivity through volume-wise magnetic competition in a topological kagome magnet journal January 2020
Fermion–boson many-body interplay in a frustrated kagome paramagnet journal August 2020
Localized spin-orbit polaron in magnetic Weyl semimetal Co3Sn2S2 journal November 2020
Negative flat band magnetism in a spin–orbit-coupled correlated kagome magnet journal February 2019
An upside-down magnet journal February 2019
Giant and anisotropic many-body spin–orbit tunability in a strongly correlated kagome magnet journal September 2018
Quantum-limit Chern topological magnetism in TbMn6Sn6 journal July 2020
Scanning tunneling microscopy on cleaved Mn3Sn(0001) surface journal July 2019
Topological insulators, topological superconductors and Weyl fermion semimetals: discoveries, perspectives and outlooks journal September 2015
Spin-polarized spin excitation spectroscopy journal December 2010
Inhomogeneous Electron Gas journal November 1964
Self-Consistent Equations Including Exchange and Correlation Effects journal November 1965
Enhanced anomalous Hall effect in the magnetic topological semimetal Co 3 Sn 2 − x In x S 2 journal March 2020
Special points for Brillouin-zone integrations journal June 1976
Ab initiomolecular dynamics for liquid metals journal January 1993
Efficient iterative schemes for ab initio total-energy calculations using a plane-wave basis set journal October 1996
From ultrasoft pseudopotentials to the projector augmented-wave method journal January 1999
Surface terminations and layer-resolved tunneling spectroscopy of the 122 iron pnictide superconductors journal April 2019
Signatures for half-metallicity and nontrivial surface states in the kagome lattice Weyl semimetal Co 3 Sn 2 S 2 journal June 2019
Flatbands and Emergent Ferromagnetic Ordering in Fe 3 Sn 2 Kagome Lattices journal August 2018
Magnetic-Field Control of Topological Electronic Response near Room Temperature in Correlated Kagome Magnets journal November 2019
Many-Body Resonance in a Correlated Topological Kagome Antiferromagnet journal July 2020
Generalized Gradient Approximation Made Simple journal October 1996
Spin mapping at the nanoscale and atomic scale journal November 2009
Superconducting topological surface states in the noncentrosymmetric bulk superconductor PbTaSe 2 journal November 2016
Revealing Magnetic Interactions from Single-Atom Magnetization Curves journal April 2008
Discovery of topological Weyl fermion lines and drumhead surface states in a room temperature magnet journal September 2019
Fermi-arc diversity on surface terminations of the magnetic Weyl semimetal Co 3 Sn 2 S 2 journal September 2019

Cited By (2)

How correlations change the magnetic structure factor of the kagome Hubbard model journal October 2021
Effects of exchange distortions in the magnetic Kagome lattice text January 2020

Figures / Tables (4)

Fig. 1(p. 3)figure Fig. 1
Fig. 2(p. 4)figure Fig. 2
Fig. 3(p. 5)figure Fig. 3
Fig. 4(p. 6)figure Fig. 4

Similar Records

Field-free platform for Majorana-like zero mode in superconductors with a topological surface state
Journal Article · Mon Mar 30 20:00:00 EDT 2020 · Physical Review B · OSTI ID:1632136
Edge states and local electronic structure around an adsorbed impurity in a topological superconductor
Journal Article · Sun Nov 15 19:00:00 EST 2015 · Physical Review. B, Condensed Matter and Materials Physics · OSTI ID:1457246
Localized spin-orbit polaron in magnetic Weyl semimetal Co3Sn2S2
Journal Article · Wed Nov 04 19:00:00 EST 2020 · Nature Communications · OSTI ID:1816478

Related Subjects

36 MATERIALS SCIENCE