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Temperature Dependence of Electron Viscosity in Superballistic GaAs Point Contacts. / Sarypov, Daniil i.; Pokhabov, Dmitriy a.; Pogosov, Arthur g. et al.

In: Physical Review Letters, Vol. 134, No. 2, 026302, 14.01.2024.

Research output: Contribution to journal › Article › peer-review

Harvard

Sarypov, DI, Pokhabov, DA, Pogosov, AG, Zhdanov, EY, Shevyrin, AA, Bakarov, AK & Shklyaev, AA 2024, 'Temperature Dependence of Electron Viscosity in Superballistic GaAs Point Contacts', Physical Review Letters, vol. 134, no. 2, 026302. https://doi.org/10.1103/PhysRevLett.134.026302

APA

Sarypov, D. I., Pokhabov, D. A., Pogosov, A. G., Zhdanov, E. Y., Shevyrin, A. A., Bakarov, A. K., & Shklyaev, A. A. (2024). Temperature Dependence of Electron Viscosity in Superballistic GaAs Point Contacts. Physical Review Letters, 134(2), [026302]. https://doi.org/10.1103/PhysRevLett.134.026302

Vancouver

Sarypov DI, Pokhabov DA, Pogosov AG, Zhdanov EY, Shevyrin AA, Bakarov AK et al. Temperature Dependence of Electron Viscosity in Superballistic GaAs Point Contacts. Physical Review Letters. 2024 Jan 14;134(2):026302. doi: 10.1103/PhysRevLett.134.026302

Author

Sarypov, Daniil i. ; Pokhabov, Dmitriy a. ; Pogosov, Arthur g. et al. / Temperature Dependence of Electron Viscosity in Superballistic GaAs Point Contacts. In: Physical Review Letters. 2024 ; Vol. 134, No. 2.

BibTeX

@article{cd7d45f9cf14423397f3b61e490f3cc8,
title = "Temperature Dependence of Electron Viscosity in Superballistic GaAs Point Contacts",
abstract = "Hydrodynamic description of collective electron motion turns out to be fruitful, since it provides a reliable physical concept that allows engineering the electron-electron interaction. We experimentally study the relation between two fundamental quantities—the electron viscosity and the Fermi quasiparticle lifetime—beyond the applicability limit of the Fermi liquid theory. We use point contact (PC) geometry to study electron transport and observe superballistic PC conductance, which is a signature of the electron viscosity. At high enough temperatures, the viscosity-lifetime relation is shown to diverge from the theoretically predicted one and turns out to be nontrivial. In addition, we study these phenomena in PCs freely suspended over a substrate, i.e., under the unique experimental conditions of enhanced electron-electron interaction. Suspension is found to reduce the electron viscosity in the whole temperature range, which makes the suspended structures a promising test bed for studying hydrodynamic effects in solids.",
author = "Sarypov, {Daniil i.} and Pokhabov, {Dmitriy a.} and Pogosov, {Arthur g.} and Zhdanov, {Evgeny yu.} and Shevyrin, {Andrey a.} and Bakarov, {Askhat k.} and Shklyaev, {Alexander a.}",
year = "2024",
month = jan,
day = "14",
doi = "10.1103/PhysRevLett.134.026302",
language = "English",
volume = "134",
journal = "Physical Review Letters",
issn = "0031-9007",
publisher = "American Physical Society",
number = "2",

}

RIS

TY - JOUR

T1 - Temperature Dependence of Electron Viscosity in Superballistic GaAs Point Contacts

AU - Sarypov, Daniil i.

AU - Pokhabov, Dmitriy a.

AU - Pogosov, Arthur g.

AU - Zhdanov, Evgeny yu.

AU - Shevyrin, Andrey a.

AU - Bakarov, Askhat k.

AU - Shklyaev, Alexander a.

PY - 2024/1/14

Y1 - 2024/1/14

N2 - Hydrodynamic description of collective electron motion turns out to be fruitful, since it provides a reliable physical concept that allows engineering the electron-electron interaction. We experimentally study the relation between two fundamental quantities—the electron viscosity and the Fermi quasiparticle lifetime—beyond the applicability limit of the Fermi liquid theory. We use point contact (PC) geometry to study electron transport and observe superballistic PC conductance, which is a signature of the electron viscosity. At high enough temperatures, the viscosity-lifetime relation is shown to diverge from the theoretically predicted one and turns out to be nontrivial. In addition, we study these phenomena in PCs freely suspended over a substrate, i.e., under the unique experimental conditions of enhanced electron-electron interaction. Suspension is found to reduce the electron viscosity in the whole temperature range, which makes the suspended structures a promising test bed for studying hydrodynamic effects in solids.

AB - Hydrodynamic description of collective electron motion turns out to be fruitful, since it provides a reliable physical concept that allows engineering the electron-electron interaction. We experimentally study the relation between two fundamental quantities—the electron viscosity and the Fermi quasiparticle lifetime—beyond the applicability limit of the Fermi liquid theory. We use point contact (PC) geometry to study electron transport and observe superballistic PC conductance, which is a signature of the electron viscosity. At high enough temperatures, the viscosity-lifetime relation is shown to diverge from the theoretically predicted one and turns out to be nontrivial. In addition, we study these phenomena in PCs freely suspended over a substrate, i.e., under the unique experimental conditions of enhanced electron-electron interaction. Suspension is found to reduce the electron viscosity in the whole temperature range, which makes the suspended structures a promising test bed for studying hydrodynamic effects in solids.

UR - https://www.scopus.com/record/display.uri?eid=2-s2.0-85214983890&origin=inward&txGid=832cd3dd5148c74d2b12f9f78dc309d2

UR - http://arxiv.org/abs/2405.09097

UR - https://www.mendeley.com/catalogue/423abf96-ed1e-3e01-89bd-9dd8077572f3/

U2 - 10.1103/PhysRevLett.134.026302

DO - 10.1103/PhysRevLett.134.026302

M3 - Article

VL - 134

JO - Physical Review Letters

JF - Physical Review Letters

SN - 0031-9007

IS - 2

M1 - 026302

ER -

ID: 62799173