Dasgupta, Indra ; Saha, Tanusri ; Mookerjee, Abhijit (1994) Stochastic resonances and the mobility edge in a three-dimensional tight-binding Anderson model Physical Review B: Condensed Matter and Materials Physics, 50 (7). pp. 4867-4870. ISSN 1098-0121
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Official URL: http://prb.aps.org/abstract/PRB/v50/i7/p4867_1
Related URL: http://dx.doi.org/10.1103/PhysRevB.50.4867
Abstract
We carry out a numerical study of the transmittance in a three-dimensional disordered Anderson model and study the weakly localized regime in the vicinity of the mobility edge, by the vector-recursion method of Godin and Haydock. This regime is straddled by stochastic resonant states and characterized by negative magnetoresistance. These stochastic resonances are very different in character to the strong fluctuations in the extended regime which arise due to lead-sample mismatch at the boundary.
| Item Type: | Article |
|---|---|
| Source: | Copyright of this article belongs to The American Physical Society. |
| ID Code: | 65139 |
| Deposited On: | 15 Oct 2011 11:49 |
| Last Modified: | 15 Oct 2011 11:49 |
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