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  Thermal and electrical signatures of a hydrodynamic electron fluid in tungsten diphosphide

Gooth, J., Menges, F., Kumar, N., Süß, V., Shekhar, C., Sun, Y., et al. (2018). Thermal and electrical signatures of a hydrodynamic electron fluid in tungsten diphosphide. Nature Communications, 9(1): 4093, pp. 1-8. doi:10.1038/s41467-018-06688-y.

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Item Permalink: http://hdl.handle.net/21.11116/0000-0002-5033-A Version Permalink: http://hdl.handle.net/21.11116/0000-0002-5035-8
Genre: Journal Article

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 Creators:
Gooth, J.1, Author              
Menges, F.2, Author
Kumar, N.1, Author              
Süß, V.1, Author              
Shekhar, C.3, Author              
Sun, Y.1, Author              
Drechsler, U.2, Author
Zierold, R.2, Author
Felser, C.4, Author              
Gotsmann, B.2, Author
Affiliations:
1Inorganic Chemistry, Max Planck Institute for Chemical Physics of Solids, Max Planck Society, ou_1863425              
2External Organizations, ou_persistent22              
3Chandra Shekhar, Inorganic Chemistry, Max Planck Institute for Chemical Physics of Solids, Max Planck Society, ou_1863428              
4Claudia Felser, Inorganic Chemistry, Max Planck Institute for Chemical Physics of Solids, Max Planck Society, ou_1863429              

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 Abstract: In stark contrast to ordinary metals, in materials in which electrons strongly interact with each other or with phonons, electron transport is thought to resemble the flow of viscous fluids. Despite their differences, it is predicted that transport in both conventional and correlated materials is fundamentally limited by the uncertainty principle applied to energy dissipation. Here we report the observation of experimental signatures of hydrodynamic electron flow in the Weyl semimetal tungsten diphosphide. Using thermal and magneto-electric transport experiments, we find indications of the transition from a conventional metallic state at higher temperatures to a hydrodynamic electron fluid below 20 K. The hydrodynamic regime is characterized by a viscosity-induced dependence of the electrical resistivity on the sample width and by a strong violation of the Wiedemann–Franz law. Following the uncertainty principle, both electrical and thermal transport are bound by the quantum indeterminacy, independent of the underlying transport regime.

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Language(s): eng - English
 Dates: 2018-10-052018-10-05
 Publication Status: Published in print
 Pages: -
 Publishing info: -
 Table of Contents: -
 Rev. Method: -
 Identifiers: DOI: 10.1038/s41467-018-06688-y
Other: Gooth2018
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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: 9 (1) Sequence Number: 4093 Start / End Page: 1 - 8 Identifier: ISSN: 2041-1723
CoNE: https://pure.mpg.de/cone/journals/resource/2041-1723