Winkler, R. and Merkler, M. and Darnhofer, T. and Rössler, Ulrich (1996) Theory for the cyclotron resonance of holes in strained asymmetric Ge-SiGe quantum wells. Physical Review B 53 (16), pp. 10858-10865.
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Other URL: http://link.aps.org/abstract/PRB/v53/p10858
We present calculations of hole Landau levels, cyclotron masses, and far-infrared spectra for strained asymmetric p-type Ge-SiGe quantum wells in a perpendicular magnetic field in order to interpret recent experimental results by Engelhardt et al. [Solid State Electron. 37, 949 (1994)]. Self-consistent hole subband calculations are combined with calculations of the Landau levels using a 6 x 6 Hamiltonian for the topmost and bulk valence bands. Our results are in very good agreement with the experimental data. Taking into account the coupling to the split-off band turns out to be important. The complex spectra of hole Landau levels in strained quantum wells remind one of the well known quantum resonance spectra of bulk -type Ge under uniaxial stress.
|Institutions:||Physics > Institute of Theroretical Physics > Retired Professors > Group Ulrich Rössler|
|Subjects:||500 Science > 530 Physics|
|Refereed:||Yes, this version has been refereed|
|Created at the University of Regensburg:||Yes|
|Deposited On:||20 Mar 2007|
|Last Modified:||20 Jul 2011 20:56|