Schultz, M. and Merkt, U. and Sonntag, A. and Rössler, Ulrich and Winkler, R. and Colin, T. and Helgesen, P. and Skauli, T. and Lovold, S. (1998) Crossing of conduction- and valence-subband Landau levels in an inverted HgTe/CdTe quantum well. PHYSICAL REVIEW B, 57 (23). pp. 14772-14775. ISSN 1098-0121, 1550-235X
Full text not available from this repository.Abstract
In the inverted-band regime of HgTe/CdTe quantum wells, the lowest Landau level of the lowest conduction subband and the highest Landau level of the topmost valence subband are predicted to cross at a critical magnetic field B-c. We study this crossing experimentally with far-infrared Fourier-transform spectroscopy in a gated HgTe/CdTe quantum well with tunable electron density. The crossing point is identified by a characteristic exchange of oscillator strength between the two transitions involved, one being a cyclotron resonance, the other an intersubband resonance. The experimental resonance positions, the oscillator strengths as well as the value of B-c, are in good agreement with theoretical results of a 6 X 6 k . p model evaluated for the [211] growth direction.
| Item Type: | Article |
|---|---|
| Uncontrolled Keywords: | HGTE-CDTE SUPERLATTICES; CADMIUM TELLURIDE; RESONANCES; BANDS |
| Subjects: | 500 Science > 530 Physics |
| Divisions: | Physics > Institute of Theroretical Physics > Alumni or Retired Professors > Group Ulrich Rössler |
| Depositing User: | Dr. Gernot Deinzer |
| Date Deposited: | 24 Feb 2023 06:42 |
| Last Modified: | 24 Feb 2023 06:42 |
| URI: | https://pred.uni-regensburg.de/id/eprint/49739 |
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