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  Sondheimer oscillations as a probe of non-ohmic flow in WP2 crystals

van Delft, M. R., Wang, Y., Putzke, C., Oswald, J., Varnavides, G., Garcia, C. A. C., et al. (2021). Sondheimer oscillations as a probe of non-ohmic flow in WP2 crystals. Nature Communications, 12(1): 4799, pp. 1-9. doi:10.1038/s41467-021-25037-0.

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van Delft, Maarten R.1, Autor
Wang, Yaxian1, Autor
Putzke, Carsten1, Autor
Oswald, Jacopo1, Autor
Varnavides, Georgios1, Autor
Garcia, Christina A. C.1, Autor
Guo, Chunyu1, Autor
Schmid, Heinz1, Autor
Süss, Vicky2, Autor           
Borrmann, Horst3, Autor           
Diaz, Jonas1, Autor
Sun, Yan2, Autor           
Felser, Claudia4, Autor           
Gotsmann, Bernd1, Autor
Narang, Prineha1, Autor
Moll, P.J.W.1, Autor
Affiliations:
1External Organizations, ou_persistent22              
2Inorganic Chemistry, Max Planck Institute for Chemical Physics of Solids, Max Planck Society, ou_1863425              
3Horst Borrmann, Chemical Metal Science, Max Planck Institute for Chemical Physics of Solids, Max Planck Society, ou_1863410              
4Claudia Felser, Inorganic Chemistry, Max Planck Institute for Chemical Physics of Solids, Max Planck Society, ou_1863429              

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 Zusammenfassung: As conductors in electronic applications shrink, microscopic conduction processes lead to strong deviations from Ohm’s law. Depending on the length scales of momentum conserving (lMC) and relaxing (lMR) electron scattering, and the device size (d), current flows may shift from ohmic to ballistic to hydrodynamic regimes. So far, an in situ methodology to obtain these parameters within a micro/nanodevice is critically lacking. In this context, we exploit Sondheimer oscillations, semi-classical magnetoresistance oscillations due to helical electronic motion, as a method to obtain lMR even when lMR ≫ d. We extract lMR from the Sondheimer amplitude in WP2, at temperatures up to T ~ 40 K, a range most relevant for hydrodynamic transport phenomena. Our data on μm-sized devices are in excellent agreement with experimental reports of the bulk lMR and confirm that WP2 can be microfabricated without degradation. These results conclusively establish Sondheimer oscillations as a quantitative probe of lMR in micro-devices. © 2021, The Author(s).

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Sprache(n): eng - English
 Datum: 2021-08-102021-08-10
 Publikationsstatus: Erschienen
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 Art der Begutachtung: -
 Identifikatoren: DOI: 10.1038/s41467-021-25037-0
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Titel: Nature Communications
  Kurztitel : Nat. Commun.
Genre der Quelle: Zeitschrift
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Ort, Verlag, Ausgabe: London : Nature Publishing Group
Seiten: - Band / Heft: 12 (1) Artikelnummer: 4799 Start- / Endseite: 1 - 9 Identifikator: ISSN: 2041-1723
CoNE: https://pure.mpg.de/cone/journals/resource/2041-1723