@article{f7849223d0dd400db36086c34b30d8fb,
title = "Many-Body Resonance in a Correlated Topological Kagome Antiferromagnet",
abstract = "We use scanning tunneling microscopy to elucidate the atomically resolved electronic structure in the strongly correlated kagome Weyl antiferromagnet Mn3Sn. 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.",
author = "Zhang, {Songtian Sonia} and Yin, {Jia Xin} and Muhammad Ikhlas and Tien, {Hung Ju} and Rui Wang and Nana Shumiya and Guoqing Chang and Tsirkin, {Stepan S.} and Youguo Shi and Changjiang Yi and Zurab Guguchia and Hang Li and Wenhong Wang and Chang, {Tay Rong} and Ziqiang Wang and Yang, {Yi Feng} and Titus Neupert and Satoru Nakatsuji and Hasan, {M. Zahid}",
note = "Funding Information: Experimental and theoretical work at Princeton University was supported by the Gordon and Betty Moore Foundation (Grants No. GBMF4547 and No. GBMF9461/Hasan). Sample characterization was supported by the U.S. Department of Energy (U.S. DOE) under the Basic Energy Sciences program (Grant No. DOE/BES DE-FG-02-05ER46200). S. S. T. and T. N. acknowledge support from the European Union{\textquoteright}s Horizon 2020 research and innovation programme (ERC-StG- Neupert-757867-PARATOP) and NCRR Marvel. T.-R. C. acknowledges support from the MOST Young Scholar Fellowship (MOST Grant for the Columbus Program No. 107-2636-M-006-004-), the National Cheng Kung University, Taiwan, and the National Center for Theoretical Sciences (NCTS), Taiwan. Z. W. is supported by the U.S. Department of Energy, Basic Energy Sciences Grant No. DE-FG02–99ER45747. This work is partially supported by CREST (JPMJCR18T3), Japan Science and Technology Agency, by Grants-in-Aids for Scientific Research on Innovative Areas (15H05882 and 15H05883) from the Ministry of Education, Culture, Sports, Science, and Technology of Japan, and by Grants-in-Aid for Scientific Research (19H00650) from the Japanese Society for the Promotion of Science (JSPS). M. Z. H. acknowledges support from Lawrence Berkeley National Laboratory and the Miller Institute of Basic Research in Science at the University of California, Berkeley in the form of a Visiting Miller Professorship. Y. S. acknowledges support from the National Key Research and Development Program of China (No. 2017YFA0302901). Publisher Copyright: {\textcopyright} 2020 American Physical Society. ",
year = "2020",
month = jul,
day = "24",
doi = "10.1103/PhysRevLett.125.046401",
language = "English (US)",
volume = "125",
journal = "Physical Review Letters",
issn = "0031-9007",
publisher = "American Physical Society",
number = "4",
}