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2001

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Quantum dots and wells, mesoscopic networks


Spectroscopy of electron - electron scattering in a 2DEG

 а,  а,  а,  б,  б,  б,  б
а Julius-Maximilians-Universität Würzburg, Sanderring, 2 Würzburg, 97070, Germany , Würzburg, Германия
б Физико-технический институт низких температур им. Б.И. Веркина Национальной академии наук Украины, проспект Ленина 47, Харьков, 61103, Украина

Experimentally electron-beam injection and detection via quantum point-contacts is used to investigate the scattering of a non-equilibrium electron distribution in a twodimensional electron gas (2DEG) of a GaAs/(Ga,Al)As heterostructure. The energy dependence of electron-electron scattering processes has been studied in a weak magnetic field by investigating the detector signal. Assuming electron beams with a narrow opening angle a magnetic field $B$ perpendicular to the 2DEG plane causes only electrons which are scattered in a point $O$ at an angle $\alpha$ to reach the detector. Thus, it is possible to measure directly the energy dependence of the angular electron distribution after scattering. The experimental data give a clear evidence for the importance of small angle scattering processes in two-dimensional systems, as predicted theoretically.

Текст pdf (182 Кб)
English fulltext is available at DOI: 10.1070/1063-7869/44/10S/S11
PACS: 73.63.−b, 73.21.−b, 68.65.−k, 71.35.−y (все)
DOI: 10.1070/1063-7869/44/10S/S11
URL: https://ufn.ru/ru/articles/2001/13/k/
Цитата: Buhmann H, Predel H, Molenkamp L V, Gurzhi R N, Kalinenko A N, Kopeliovich A I, Yanovsky A V "Spectroscopy of electron - electron scattering in a 2DEG" УФН 171 57–61 (2001)
BibTexBibNote ® (generic)BibNote ® (RIS) MedlineRefWorks
Русский English
PT Journal Article
TI Spectroscopy of electron - electron scattering in a 2DEG
AU Buhmann H
FAU Buhmann H
AU Predel H
FAU Predel H
AU Molenkamp L V
FAU Molenkamp LV
AU Gurzhi R N
FAU Gurzhi RN
AU Kalinenko A N
FAU Kalinenko AN
AU Kopeliovich A I
FAU Kopeliovich AI
AU Yanovsky A V
FAU Yanovsky AV
DP 10 Sup, 2001
TA Usp. Fiz. Nauk
VI 171
IP 13
PG 57-61
RX 10.1070/1063-7869/44/10S/S11
URL https://ufn.ru/ru/articles/2001/13/k/
SO Usp. Fiz. Nauk 2001 Sup 10;171(13):57-61

English citation: Buhmann H, Predel H, Molenkamp L V, Gurzhi R N, Kalinenko A N, Kopeliovich A I, Yanovsky A V “Spectroscopy of electron - electron scattering in a 2DEGPhys. Usp. 44 57–61 (2001); DOI: 10.1070/1063-7869/44/10S/S11

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