TY - JOUR

T1 - Geometric engineering of viscous magnetotransport in a two-dimensional electron system

AU - Levin, A. D.

AU - Gusev, G. M.

AU - Yaroshevich, A. S.

AU - Kvon, Z. D.

AU - Bakarov, A. K.

N1 - The financial support of this work by São Paulo Research Foundation (FAPESP) Grant No. 2019/16736-2, the National Council for Scientific and Technological Development (CNPq) and Ministry of Science and Higher Education of the Russian Federation is acknowledge. Публикация для корректировки.

PY - 2023/9/15

Y1 - 2023/9/15

N2 - In this study, we present our experimental investigation on the magnetotransport properties of a two-dimensional electron system in GaAs quantum wells utilizing a variety of device geometries, including obstacles with thin barriers and periodic width variations. Our primary focus is to explore the impact of these geometries on the electron viscous flow parameters, enabling precise manipulation of hydrodynamic effects under controlled conditions. Through an analysis of the large negative magnetoresistivity and zero field resistivity, we deduce the scattering times for electron-electron and electron-phonon interactions, as well as the effective channel width. Our findings confirm that the system under investigation serves as a tunable experimental platform for investigating hydrodynamic transport regimes at temperatures above 10 K.

AB - In this study, we present our experimental investigation on the magnetotransport properties of a two-dimensional electron system in GaAs quantum wells utilizing a variety of device geometries, including obstacles with thin barriers and periodic width variations. Our primary focus is to explore the impact of these geometries on the electron viscous flow parameters, enabling precise manipulation of hydrodynamic effects under controlled conditions. Through an analysis of the large negative magnetoresistivity and zero field resistivity, we deduce the scattering times for electron-electron and electron-phonon interactions, as well as the effective channel width. Our findings confirm that the system under investigation serves as a tunable experimental platform for investigating hydrodynamic transport regimes at temperatures above 10 K.

UR - https://www.scopus.com/record/display.uri?eid=2-s2.0-85172655927&origin=inward&txGid=f5321e2451521de78eac72875441e672

UR - https://www.mendeley.com/catalogue/50cdcd07-855e-361a-8a39-a183cb02f43d/

U2 - 10.1103/PhysRevB.108.115310

DO - 10.1103/PhysRevB.108.115310

M3 - Article

VL - 108

JO - Physical Review B

JF - Physical Review B

SN - 2469-9950

IS - 11

M1 - 115310

ER -