A subclass of dynamical semigroups induced by the interaction of a quantum system with an environment is introduced. Such semigroups lead to the selection of a stable subalgebra of effective observables. The structure of this subalgebra is completely determined. 2000
✦ LIBER ✦
The observation of the integral quantum Hall effect in PbTe/Pb1−xEuxTe quantum well structures
✍ Scribed by M.M. Olver; J.Z. Pastalan; S.E. Romaine; B.B. Goldberg; G. Springholz; G. Ihninger; G. Bauer
- Publisher
- Elsevier Science
- Year
- 1994
- Tongue
- English
- Weight
- 376 KB
- Volume
- 89
- Category
- Article
- ISSN
- 0038-1098
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We have theoretically studied the electronic and optical properties of a quantum well (QW) in which the well region is constructed from a binary alloy semiconductor A 1--x B x in the coherent potential approximation (CPA). A tight binding model is used for a single particle (electron, hole, Frenkel