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

Journal Article


Abstract


  • The 2-dimensional electron gas (2DEG) in an Al0.6Ga0.4Sb/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. © 1992.

Publication Date


  • 1992

Citation


  • Manasreh, M. O., Gumbs, G., Zhang, C., Stutz, C. E., Evans, K. R., Bozada, C. A., . . . Mitchel, W. C. (1992). Effective mass of the 2-dimensional electron gas in an Al0.6Ga0.4Sb/InAs single quantum well. Superlattices and Microstructures, 11(4), 423-427. doi:10.1016/0749-6036(92)90200-O

Scopus Eid


  • 2-s2.0-0026481489

Start Page


  • 423

End Page


  • 427

Volume


  • 11

Issue


  • 4

Abstract


  • The 2-dimensional electron gas (2DEG) in an Al0.6Ga0.4Sb/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. © 1992.

Publication Date


  • 1992

Citation


  • Manasreh, M. O., Gumbs, G., Zhang, C., Stutz, C. E., Evans, K. R., Bozada, C. A., . . . Mitchel, W. C. (1992). Effective mass of the 2-dimensional electron gas in an Al0.6Ga0.4Sb/InAs single quantum well. Superlattices and Microstructures, 11(4), 423-427. doi:10.1016/0749-6036(92)90200-O

Scopus Eid


  • 2-s2.0-0026481489

Start Page


  • 423

End Page


  • 427

Volume


  • 11

Issue


  • 4