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Effective mass of the 2-dimensional electron gas in an Al0.6Ga0.4Sb/InAs single quantum well

✍ Scribed by M.O. Manasreh; Godfrey Gumbs; C. Zhang; C.E. Stutz; K.R. Evans; C.A. Bozada; I. Lo; W.C. Mitchel

Publisher
Elsevier Science
Year
1992
Tongue
English
Weight
361 KB
Volume
11
Category
Article
ISSN
0749-6036

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✦ Synopsis

The 2-dimensional electron gas (2DEG) in an Al0.6Ga0.aSb/inAs single quantum well is studied using cyclotron resonance and Shubnikov -de Haas (SdH) techniques. The effective mass (m*) of the 2DEG was obtained from the peak positions of the cyclotron resonance transmission spectra. The results exhibit oscillatory behavior as a function of the magnetic field strength (B). The m* value extracted from the temperature dependence of the SdH oscillations is in good agreement with the average value of m* obtained from cyclotron resonance measurements. The effective mass is calculated as a function of B using an electron self-energy model based on the Hartree-Fock approximation. The calculated m* values also show oscillatory behavior similar to that of the measured cyclotron resonance m*. Both experiment and theory show that m* maxima are shifted from the integral values (both odd and even) of the filling factors.

πŸ“œ SIMILAR VOLUMES

Nonparabolic tendency of electron effect
Nonparabolic tendency of electron effective mass estimated by confined states in In0.53Ga0.47As/In0.52Al0.48As multi-quantum-well structures
✍ K Tanaka; N Kotera; H Nakamura πŸ“‚ Article πŸ“… 1999 πŸ› Elsevier Science 🌐 English βš– 76 KB

We observed that a series of peaks, which were clearly extracted from a photocurrent difference spectrum, corresponded to interband optical transitions of an In 0.53 Ga 0.47 As/ In 0.52 Al 0.48 As multi-quantum wells structure. The nonparabolic tendency of the electron effective mass was suggested f