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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. doi:10.1038/s41467-021-23435-y.

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https://doi.org/10.1038/s41467-021-23435-y (Publisher version)
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 Creators:
Galeski, S.1, Author
Ehmcke, T.1, Author
Wawrzyńczak, R.1, Author
Lozano, P. M.1, Author
Cho, K.2, Author              
Sharma, A.2, Author              
Das, S.2, Author              
Küster, F.2, Author              
Sessi, P.2, Author              
Brando, M.1, Author
Küchler, R.1, Author
Markou, A.1, Author
König, M.1, Author
Swekis, P.1, Author
Felser, C.1, Author
Sassa, Y.1, Author
Li, Q.1, Author
Gu, G.1, Author
Zimmermann, M. V.1, Author
Ivashko, O.1, Author
Gorbunov, D. I.1, AuthorZherlitsyn, S.1, AuthorFörster, T.1, AuthorParkin, S. S. P.2, Author              Wosnitza, J.1, AuthorMeng, T.1, AuthorGooth, J.1, Author more..
Affiliations:
1External Organizations, ou_persistent22              
2Nano-Systems from Ions, Spins and Electrons, Max Planck Institute of Microstructure Physics, Max Planck Society, ou_3287476              

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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
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 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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Publ. Info: London : Nature Publishing Group
Pages: - Volume / Issue: 12 Sequence Number: 3197 Start / End Page: - Identifier: ISSN: 2041-1723
CoNE: https://pure.mpg.de/cone/journals/resource/2041-1723