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  Giant, unconventional anomalous Hall effect in the metallic frustrated magnet candidate, KV3Sb5

Yang, S.-Y., Wang, Y., Ortiz, B. R., Liu, D., Gayles, J., Derunova, E., et al. (2020). Giant, unconventional anomalous Hall effect in the metallic frustrated magnet candidate, KV3Sb5. Science Advances, 6(31): eabb6003, pp. 1-7. doi:10.1126/sciadv.abb6003.

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Item Permalink: http://hdl.handle.net/21.11116/0000-0007-0A90-B Version Permalink: http://hdl.handle.net/21.11116/0000-0007-0A96-5
Genre: Journal Article

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 Creators:
Yang, Shuo-Ying1, Author
Wang, Yaojia1, Author
Ortiz, Brenden R.1, Author
Liu, Defa1, Author
Gayles, Jacob2, Author              
Derunova, Elena1, Author
Gonzalez-Hernandez, Rafael1, Author
Smejkal, Libor1, Author
Chen, Yulin1, Author
Parkin, Stuart S. P.1, Author
Wilson, Stephen D.1, Author
Toberer, Eric S.1, Author
McQueen, Tyrel1, Author
Ali, Mazhar N.1, Author
Affiliations:
1External Organizations, ou_persistent22              
2Inorganic Chemistry, Max Planck Institute for Chemical Physics of Solids, Max Planck Society, ou_1863425              

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 Abstract: The anomalous Hall effect (AHE) is one of the most fundamental phenomena in physics. In the highly conductive regime, ferromagnetic metals have been the focus of past research. Here, we report a giant extrinsic AHE in KV3Sb5, an exfoliable, highly conductive semimetal with Dirac quasiparticles and a vanadium Kagome net. Even without report of long range magnetic order, the anomalous Hall conductivity reaches 15,507 Omega(-1) cm(-1) with an anomalous Hall ratio of approximate to 1.8%; an order of magnitude larger than Fe. Defying theoretical expectations, KV3Sb5 shows enhanced skew scattering that scales quadratically, not linearly, with the longitudinal conductivity, possibly arising from the combination of highly conductive Dirac quasiparticles with a frustrated magnetic sublattice. This allows the possibility of reaching an anomalous Hall angle of 90 degrees in metals. This observation raises fundamental questions about AHEs and opens new frontiers for AHE and spin Hall effect exploration, particularly in metallic frustrated magnets.

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Language(s): eng - English
 Dates: 2020-07-312020-07-31
 Publication Status: Published in print
 Pages: -
 Publishing info: -
 Table of Contents: -
 Rev. Type: -
 Identifiers: ISI: 000556543100036
DOI: 10.1126/sciadv.abb6003
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Title: Science Advances
  Other : Sci. Adv.
Source Genre: Journal
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Publ. Info: Washington : AAAS
Pages: - Volume / Issue: 6 (31) Sequence Number: eabb6003 Start / End Page: 1 - 7 Identifier: ISSN: 2375-2548
CoNE: https://pure.mpg.de/cone/journals/resource/2375-2548