Determination of the carrier density and effective mass of the two-dimensional electron gas at Al x Ga1?x As/GaAs heterostructures

1992 ◽  
Vol 11 (14) ◽  
pp. 1014-1016
Author(s):  
T. W. Kim ◽  
Y. T. Lee ◽  
K. H. Yoo ◽  
G. Ihm ◽  
S. C. Lee
Keyword(s):  
Effective Mass ◽  
Carrier Density ◽  
Electron Gas ◽  
Two Dimensional ◽  
Dimensional Electron ◽  
Two Dimensional Electron Gas ◽  
Dimensional Electron Gas

Investigation of Traps in AlGaN/GaN Heterostructures by Ultrasonic Vibrations

2021 ◽  
Vol 66 (12) ◽  
pp. 1058
Author(s):  
V.V. Kaliuzhnyi ◽  
O.I. Liubchenko ◽  
M.D. Tymochko ◽  
Y.M. Olikh ◽  
V.P. Kladko ◽  
...  
Keyword(s):  
Carrier Density ◽  
Electron Gas ◽  
Two Dimensional ◽  
Ultrasonic Vibrations ◽  
Persistent Photoconductivity ◽  
Dimensional Electron ◽  
Two Dimensional Electron Gas ◽  
Dx Centers ◽  
Dimensional Electron Gas

A method of dynamic deformations has been proposed as a useful informative tool in the characterization of transportation properties of a two-dimensional electron gas (2DEG) in AlGaN/GaN heterostructures. It is found that the exposing of a sample to ultrasonic vibrations results in the persistent acousto-conductivity (PAC) which was observed up to room temperatures. The PAC behaves itself like persistent photoconductivity (PPC), and the carrier density in the 2DEG channel is primarily contributed by the transfer of electrons excited from traps (like DX centers) as a result of their reconstruction under the ultrasonic loading.

scholarly journals Renormalization factor and effective mass of the two-dimensional electron gas

2009 ◽  
Vol 79 (4) ◽  
Author(s):  
Markus Holzmann ◽  
Bernard Bernu ◽  
Valerio Olevano ◽  
Richard M. Martin ◽  
David M. Ceperley
Keyword(s):  
Effective Mass ◽  
Electron Gas ◽  
Two Dimensional ◽  
Dimensional Electron ◽  
Two Dimensional Electron Gas ◽  
Renormalization Factor ◽  
Dimensional Electron Gas
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