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  Large anomalous Hall effect in the kagome ferromagnet LiMn6Sn6

Chen, D., Le, C., Fu, C., Lin, H., Schnelle, W., Sun, Y., et al. (2021). Large anomalous Hall effect in the kagome ferromagnet LiMn6Sn6. Physical Review B, 103(14): 144410, pp. 1-5. doi:10.1103/PhysRevB.103.144410.

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 Creators:
Chen, Dong1, Author              
Le, Congcong1, Author              
Fu, Chenguang1, Author              
Lin, Haicheng1, Author              
Schnelle, Walter2, Author              
Sun, Yan1, Author              
Felser, Claudia3, Author              
Affiliations:
1Inorganic Chemistry, Max Planck Institute for Chemical Physics of Solids, Max Planck Society, ou_1863425              
2Walter Schnelle, Inorganic Chemistry, Max Planck Institute for Chemical Physics of Solids, Max Planck Society, ou_1863441              
3Claudia Felser, Inorganic Chemistry, Max Planck Institute for Chemical Physics of Solids, Max Planck Society, ou_1863429              

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Free keywords: Ferromagnetic materials, Ferromagnetism, Hall effect, Lithium alloys, Magnets, Rare earth compounds, Rare earths, Superconducting materials, Ternary alloys, Tin alloys, Anomalous hall effects, Band structure calculation, Electrons and holes, Experimental values, Hall conductivity, Lattice geometry, Low temperatures, Positive magnetoresistance, Manganese alloys
 Abstract: Kagome magnets are believed to have numerous exotic physical properties due to the possible interplay between lattice geometry, electron correlation and band topology. Here, we report the large anomalous Hall effect in the kagome ferromagnet LiMn6Sn6, which has a Curie temperature of 382 K and easy plane along with the kagome lattice. At low temperatures, unsaturated positive magnetoresistance and opposite signs of ordinary Hall coefficient for ρxz and ρyx indicate the coexistence of electrons and holes in the system. A large intrinsic anomalous Hall conductivity of 380ω-1cm-1, or 0.44e2/h per Mn layer, is observed in σxyA. This value is significantly larger than those in other RMn6Sn6 (R = rare earth elements) kagome compounds. Band structure calculations show several band crossings, including a spin-polarized Dirac point at the K point, close to the Fermi energy. The calculated intrinsic Hall conductivity agrees well with the experimental value, and shows a maximum peak near the Fermi energy. We attribute the large anomalous Hall effect in LiMn6Sn6 to the band crossings closely located near the Fermi energy. © 2021 authors.

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Language(s): eng - English
 Dates: 2021-04-062021-04-06
 Publication Status: Published in print
 Pages: -
 Publishing info: -
 Table of Contents: -
 Rev. Type: -
 Identifiers: DOI: 10.1103/PhysRevB.103.144410
 Degree: -

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Title: Physical Review B
  Abbreviation : Phys. Rev. B
Source Genre: Journal
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Publ. Info: Woodbury, NY : American Physical Society
Pages: - Volume / Issue: 103 (14) Sequence Number: 144410 Start / End Page: 1 - 5 Identifier: ISSN: 1098-0121
CoNE: https://pure.mpg.de/cone/journals/resource/954925225008