Decoherence in nanostructures and quantum systems
β Scribed by R.F. O'Connell
- Publisher
- Elsevier Science
- Year
- 2003
- Tongue
- English
- Weight
- 212 KB
- Volume
- 19
- Category
- Article
- ISSN
- 1386-9477
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π SIMILAR VOLUMES
Dissipation and decoherence are reviewed for quantum magnets, in which quantum fluctuations render a semi-classical picture incorrect. This is done for 3 examples in detail. First, the tunneling of magnetic domain walls is considered-this is a typical quantum soliton problem, with dissipation being
## Abstract Starting from the observation that at very low temperatures an isolated nanomagnet can be treated as an effective twoβstate system, we introduce a model to study quantum tunnelling and decoherence phenomena. We assume that the total spin of the magnet interacts with a spin bath. We show