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  Unconventional Hall response in the quantum limit of HfTe5

Galeski, S., Zhao, X., Wawrzyńczak, R., Meng, T., Förster, T., Lozano, P. M., et al. (2020). Unconventional Hall response in the quantum limit of HfTe5. Nature Communications, 11(1): 5926, pp. 1-8. doi:10.1038/s41467-020-19773-y.

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Item Permalink: http://hdl.handle.net/21.11116/0000-0007-7484-1 Version Permalink: http://hdl.handle.net/21.11116/0000-0007-74CA-3
Genre: Journal Article

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 Creators:
Galeski, S.1, Author              
Zhao, X.2, Author
Wawrzyńczak, R.1, Author              
Meng, T.2, Author
Förster, T.2, Author
Lozano, P. M.2, Author
Honnali, S.1, Author              
Lamba, N.1, Author              
Ehmcke, T.2, Author
Markou, A.1, Author              
Li., Q.2, Author
Gu, G.2, Author
Zhu, W.2, Author
Wosnitza, J.2, Author
Felser, C.3, Author              
Chen, G. F.2, Author
Gooth, J.4, Author              
Affiliations:
1Inorganic Chemistry, Max Planck Institute for Chemical Physics of Solids, Max Planck Society, ou_1863425              
2External Organizations, ou_persistent22              
3Claudia Felser, Inorganic Chemistry, Max Planck Institute for Chemical Physics of Solids, Max Planck Society, ou_1863429              
4Nanostructured Quantum Matter, Max Planck Institute for Chemical Physics of Solids, Max Planck Society, ou_3018212              

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 Abstract: Interacting electrons confined to their lowest Landau level in a high magnetic field can form a variety of correlated states, some of which manifest themselves in a Hall effect. Although such states have been predicted to occur in three-dimensional semimetals, a corresponding Hall response has not yet been experimentally observed. Here, we report the observation of an unconventional Hall response in the quantum limit of the bulk semimetal HfTe5, adjacent to the three-dimensional quantum Hall effect of a single electron band at low magnetic fields. The additional plateau-like feature in the Hall conductivity of the lowest Landau level is accompanied by a Shubnikov-de Haas minimum in the longitudinal electrical resistivity and its magnitude relates as 3/5 to the height of the last plateau of the three-dimensional quantum Hall effect. Our findings are consistent with strong electron-electron interactions, stabilizing an unconventional variant of the Hall effect in a three-dimensional material in the quantum limit.

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Language(s): eng - English
 Dates: 2020
 Publication Status: Published in print
 Pages: -
 Publishing info: -
 Table of Contents: -
 Rev. Type: -
 Identifiers: DOI: 10.1038/s41467-020-19773-y
 Degree: -

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Title: Nature Communications
  Abbreviation : Nat. Commun.
Source Genre: Journal
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Publ. Info: London : Nature Publishing Group
Pages: 5926 Volume / Issue: 11 (1) Sequence Number: 5926 Start / End Page: 1 - 8 Identifier: ISSN: 2041-1723
CoNE: https://pure.mpg.de/cone/journals/resource/2041-1723