Quantum-well Hall devices in Si-delta-doped Al0.25Ga0.75As/GaAs and pseudomorphic Al0.25 Ga0.75As/In0.25Ga0.75As/GaAs heterostructures grown by LP-MOCVD: performance comparisons
โ Scribed by Jeong-Soo Lee; Kwang-Ho Ahn; Yoon-Ha Jeong; Dae Mann Kim
- Book ID
- 114536594
- Publisher
- IEEE
- Year
- 1996
- Tongue
- English
- Weight
- 759 KB
- Volume
- 43
- Category
- Article
- ISSN
- 0018-9383
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We report magnetotransport experiments in high carrier density GaAs/GaoslnozAs/Gao.75Alo25As heterostructures in magnetic fields up to 50 T. At the lowest electron densities the quantized Hall effect is observed, with one subband occupied. As the density is increased, features indicating the populat
The magneto-optical absorption spectrum of a \(D^{-}\)ion in a \(\mathrm{GaAs}_{-} \mathrm{Ga}_{0.75} \mathrm{Al}_{0.25} \mathrm{As}\) quantum well is calculated. We used the variational method based on a two orbital picture of a \(D^{-}\)ion, in which each single electron orbital is represented by