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  Origin of the quasi-quantized Hall effect in ZrTe5

Galeski, S., Ehmcke, T., Wawrzyńczak, R., Lozano, P. M., Cho, K., Sharma, A., et al. (2021). Origin of the quasi-quantized Hall effect in ZrTe5. Nature Communications, 12: 3197, pp. 1-8. doi:10.1038/s41467-021-23435-y.

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Galeski, S.1, Author              
Ehmcke, T.2, Author
Wawrzyńczak, R.1, Author              
Lozano, P. M.2, Author
Cho, K.2, Author
Sharma, A.2, Author
Das, S.2, Author
Küster, F.2, Author
Sessi, P.2, Author
Brando, M.3, Author              
Küchler, R.4, Author              
Markou, A.1, Author              
König, M.5, Author              
Swekis, P.1, Author              
Felser, C.6, Author              
Sassa, Y.2, Author
Li, Q.2, Author
Gu, G.2, Author
Zimmermann, M. V.2, Author
Ivashko, O.2, Author
Gorbunov, D. I.2, AuthorZherlitsyn, S.2, AuthorFörster, T.2, AuthorParkin, S. S. P.2, AuthorWosnitza, J.2, AuthorMeng, T.2, AuthorGooth, J.7, Author               more..
Affiliations:
1Inorganic Chemistry, Max Planck Institute for Chemical Physics of Solids, Max Planck Society, ou_1863425              
2External Organizations, ou_persistent22              
3Manuel Brando, Physics of Quantum Materials, Max Planck Institute for Chemical Physics of Solids, Max Planck Society, ou_1863469              
4Physics of Quantum Materials, Max Planck Institute for Chemical Physics of Solids, Max Planck Society, ou_1863462              
5Markus König, Physics of Quantum Materials, Max Planck Institute for Chemical Physics of Solids, Max Planck Society, ou_1863470              
6Claudia Felser, Inorganic Chemistry, Max Planck Institute for Chemical Physics of Solids, Max Planck Society, ou_1863429              
7Nanostructured Quantum Matter, Max Planck Institute for Chemical Physics of Solids, Max Planck Society, ou_3018212              

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 Abstract: The quantum Hall effect (QHE) is traditionally considered to be a purely two-dimensional (2D) phenomenon. Recently, however, a three-dimensional (3D) version of the QHE was reported in the Dirac semimetal ZrTe5. It was proposed to arise from a magnetic-field-driven Fermi surface instability, transforming the original 3D electron system into a stack of 2D sheets. Here, we report thermodynamic, spectroscopic, thermoelectric and charge transport measurements on such ZrTe5 samples. The measured properties: magnetization, ultrasound propagation, scanning tunneling spectroscopy, and Raman spectroscopy, show no signatures of a Fermi surface instability, consistent with in-field single crystal X-ray diffraction. Instead, a direct comparison of the experimental data with linear response calculations based on an effective 3D Dirac Hamiltonian suggests that the quasi-quantization of the observed Hall response emerges from the interplay of the intrinsic properties of the ZrTe5 electronic structure and its Dirac-type semi-metallic character.

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Language(s): eng - English
 Dates: 2021-05-272021-05-27
 Publication Status: Published in print
 Pages: -
 Publishing info: -
 Table of Contents: -
 Rev. Type: -
 Identifiers: DOI: 10.1038/s41467-021-23435-y
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Title: Nature Communications
  Abbreviation : Nat. Commun.
Source Genre: Journal
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Affiliations:
Publ. Info: London : Nature Publishing Group
Pages: - Volume / Issue: 12 Sequence Number: 3197 Start / End Page: 1 - 8 Identifier: ISSN: 2041-1723
CoNE: https://pure.mpg.de/cone/journals/resource/2041-1723