Результаты исследований: Научные публикации в периодических изданиях › статья по материалам конференции › Рецензирование
Gurzhi effect in point contacts in GaAs. / Сарыпов, Даниил Игоревич; Похабов, Дмитрий Александрович; Погосов, Артур Григорьевич и др.
в: St. Petersburg State Polytechnical University Journal: Physics and Mathematics, Том 17, № 1.1, 14, 05.2024, стр. 89-95.Результаты исследований: Научные публикации в периодических изданиях › статья по материалам конференции › Рецензирование
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TY - JOUR
T1 - Gurzhi effect in point contacts in GaAs
AU - Сарыпов, Даниил Игоревич
AU - Похабов, Дмитрий Александрович
AU - Погосов, Артур Григорьевич
AU - Егоров, Дмитрий Александрович
AU - Жданов, Евгений Юрьевич
AU - Бакаров, Асхат Климович
N1 - The study was funded by the Russian Science Foundation (project 22-12-00343).
PY - 2024/5
Y1 - 2024/5
N2 - Hydrodynamic electron transport through point contacts of different widths in two-dimensional electron gas in GaAs/AlGaAs heterostructure is studied. Effect Gurzhi, i.e., minimum in the temperature dependence of the point contact resistance, corresponding to the conductance exceeding the ballistic limit, is experimentally observed. The minimum is shown to be observed in case when electron-electron scattering length is comparable with the point contact width. Under this condition, electrons act as viscous fluid, that leads to the resistance reduction. The experimental data including the width dependence are consistent with the theoretical prediction of the viscous contribution to the point contact conductance.
AB - Hydrodynamic electron transport through point contacts of different widths in two-dimensional electron gas in GaAs/AlGaAs heterostructure is studied. Effect Gurzhi, i.e., minimum in the temperature dependence of the point contact resistance, corresponding to the conductance exceeding the ballistic limit, is experimentally observed. The minimum is shown to be observed in case when electron-electron scattering length is comparable with the point contact width. Under this condition, electrons act as viscous fluid, that leads to the resistance reduction. The experimental data including the width dependence are consistent with the theoretical prediction of the viscous contribution to the point contact conductance.
KW - electron hydrodynamics
KW - electron-electron scattering
KW - viscous electron fluid
UR - https://www.scopus.com/record/display.uri?eid=2-s2.0-85196955426&origin=inward&txGid=1f378f4953829aec675b028d9d7e04ee
UR - https://www.mendeley.com/catalogue/85d87ace-af44-3997-9c2e-30c30404fb69/
U2 - 10.18721/JPM.171.114
DO - 10.18721/JPM.171.114
M3 - Conference article
VL - 17
SP - 89
EP - 95
JO - St. Petersburg State Polytechnical University Journal: Physics and Mathematics
JF - St. Petersburg State Polytechnical University Journal: Physics and Mathematics
SN - 2618-8686
IS - 1.1
M1 - 14
ER -
ID: 60559574