Relaxation Dynamics of Disordered Spin Chains: Localization and the Existence of a Stationary State
β Scribed by Ziraldo, Simone; Silva, Alessandro; Santoro, Giuseppe E.
- Book ID
- 118138986
- Publisher
- The American Physical Society
- Year
- 2012
- Tongue
- English
- Weight
- 284 KB
- Volume
- 109
- Category
- Article
- ISSN
- 0031-9007
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π SIMILAR VOLUMES
It is shown that the spm-spin and spin-lattice relaxation rates in the lowest triplet state of aniline in a p-xylene host crystal are determmed by the presence of a close-lying local phonon state. It is concluded that the motion of the aniline molecule has a highly localised character.
A generalization of the standard spin-boson model is considered. The Hamiltonian H(:) of the model with a coupling parameter : # R acts in the tensor product H F b of a Hilbert space H and the boson (symmetric) Fock space F b over L 2 (R & ). The existence and uniqueness of ground states of H(:) are