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- Title
A COMPARATIVE STUDY OF SOME MODELS OF INCOHERENCE AT THE MESOSCOPIC SCALE.
- Authors
Benjamin, Colin; Jayannavar, A. M.
- Abstract
The pre-existing literature on phenomena at the mesoscopic scale concern among other things phase coherent transport. Phase coherent transport dominates at very low temperatures. With increasing in temperature, as the system size becomes comparable to the inelastic mean free path phase incoherence sets in. This incoherence further leads to dephasing, and as a consequence purely quantum effects in electron transport give way to classical macroscopic behavior. In this work we consider two distinct phenomenological models of incoherent transport, the Coherent Absorption and Wave Attenuation models. We reveal some physical problems in the Coherent Absorption model as opposed to the Wave Attenuation model. We also compare our proposed model with experiments in case of the much studied peak to valley ratios in resonant tunneling diodes, magneto-conductance oscillations and Fano resonances in case of Aharonov–Bohm rings.
- Subjects
MESOSCOPIC phenomena (Physics); DIODES; INELASTIC scattering; QUANTUM tunneling; RESONANCE
- Publication
International Journal of Modern Physics B: Condensed Matter Physics; Statistical Physics; Applied Physics, 2003, Vol 17, Issue 26, p4733
- ISSN
0217-9792
- Publication type
Article
- DOI
10.1142/S0217979203022878