Many-Body Resonance in a Correlated Topological Kagome Antiferromagnet.
- Zhang SS Laboratory for Topological Quantum Matter and Advanced Spectroscopy, Department of Physics, Princeton University, Princeton 08544, New Jersey, USA.
- Yin JX Laboratory for Topological Quantum Matter and Advanced Spectroscopy, Department of Physics, Princeton University, Princeton 08544, New Jersey, USA.
- Ikhlas M Institute for Solid State Physics, University of Tokyo, Kashiwa 277-8581, Japan.
- Tien HJ Department of Physics, National Cheng Kung University, Tainan 701, Taiwan.
- Wang R National Laboratory of Solid State Microstructures and Department of Physics, Nanjing University, Nanjing 210093, China.
- Shumiya N Laboratory for Topological Quantum Matter and Advanced Spectroscopy, Department of Physics, Princeton University, Princeton 08544, New Jersey, USA.
- Chang G Laboratory for Topological Quantum Matter and Advanced Spectroscopy, Department of Physics, Princeton University, Princeton 08544, New Jersey, USA.
- Tsirkin SS Department of Physics, University of Zurich, Zurich 8057, Switzerland.
- Shi Y Beijing National Laboratory for Condensed Matter Physics and Institute of Physics, Chinese Academy of Sciences, Beijing 100190, China.
- Yi C Beijing National Laboratory for Condensed Matter Physics and Institute of Physics, Chinese Academy of Sciences, Beijing 100190, China.
- Guguchia Z Laboratory for Muon Spin Spectroscopy, Paul Scherrer Institute, Villigen PSI CH-5232, Switzerland.
- Li H Beijing National Laboratory for Condensed Matter Physics and Institute of Physics, Chinese Academy of Sciences, Beijing 100190, China.
- Wang W Beijing National Laboratory for Condensed Matter Physics and Institute of Physics, Chinese Academy of Sciences, Beijing 100190, China.
- Chang TR Department of Physics, National Cheng Kung University, Tainan 701, Taiwan.
- Wang Z Department of Physics, Boston College, Chestnut Hill, Massachusetts 02467, USA.
- Yang YF Beijing National Laboratory for Condensed Matter Physics and Institute of Physics, Chinese Academy of Sciences, Beijing 100190, China.
- Neupert T Department of Physics, University of Zurich, Zurich 8057, Switzerland.
- Nakatsuji S Institute for Solid State Physics, University of Tokyo, Kashiwa 277-8581, Japan.
- Hasan MZ Laboratory for Topological Quantum Matter and Advanced Spectroscopy, Department of Physics, Princeton University, Princeton 08544, New Jersey, USA.
- 2020-08-16
Published in:
- Physical review letters. - 2020
English
We use scanning tunneling microscopy to elucidate the atomically resolved electronic structure in the strongly correlated kagome Weyl antiferromagnet Mn_{3}Sn. In stark contrast to its broad single-particle electronic structure, we observe a pronounced resonance with a Fano line shape at the Fermi level resembling the many-body Kondo resonance. We find that this resonance does not arise from the step edges or atomic impurities but the intrinsic kagome lattice. Moreover, the resonance is robust against the perturbation of a vector magnetic field, but broadens substantially with increasing temperature, signaling strongly interacting physics. We show that this resonance can be understood as the result of geometrical frustration and strong correlation based on the kagome lattice Hubbard model. Our results point to the emergent many-body resonance behavior in a topological kagome magnet.
- Language
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- English
- Open access status
- green
- Identifiers
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- DOI 10.1103/PhysRevLett.125.046401
- PMID 32794798
- Persistent URL
- https://sonar.ch/global/documents/266790
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