Session CC - Condensed Matter I.
MIXED session, Friday morning, November 15
Henry Oliver E, Holiday Inn
The Hall and longitudinal transport properties of electrons in the Al GaAs/GaAs/AlGaAs quantum well system are investigated within a Green's function many body quantum approach [1]. The quantum well is modeled with a variational function scheme [2] in an analytic fashion in order to facilitate the implementation of the theoretical transport approach. Scattering, such as polar optical, impurity, and acoustic mechanisms have been incorporated in the investigation [3], including up to 60 Landau levels. While the results employ experimental [4] parameters, an interesting comparison is made between the calculations including and excluding the electron-electron interactions. The results will be presented for a magnetic field regime in the range of about 2 to 30 tesla for low to high electric field values. [1] Cai et al. Phys. Rev. B Vol. 31, 4070 (1985). [2] S. Mori and T. Ando, J. Phys. Soc. Jpn. Vol. 48, 865 (1980). [3] J. E. Hasbun, APS Bull, Vol 41, 419 (1996). [4] Kim et al., J. Appl. Phys. Vol. 76, 2863 (1994). *Supported by grants from SUWG, Res. Corp. and the NSF-PSC.