2007/12/23 by Swarnali Bandopadhyay, Debasish Chaudhuri, Arun M. Jayannavar
Computer Science · Physics and Astronomy · #Mechanical and Optical Resonators #Quantum Information and Cryptography #Quantum and electron transport phenomena #cond-mat.mes-hall
paper · pdf · doi:10.1016/j.physleta.2009.12.004
published as Physics Letters A 374 (2010) 813-818 · 7 pages, 9 figures
arxiv created 2007/12/23 · openalex publication_date 2009/12/10 · arxiv updated 2010/05/28 · openalex created_date 2025/10/10 · openalex updated_date 2026/07/28
We compare two phenomenological models of dephasing that are in use recently. We show that the stochastic absorption model leads to reasonable dephasing in series (double barrier) and parallel (ring) quantum resistors in presence and absence of magnetic flux. For large enough dephasing it leads to Ohm's law. On the other hand a random phase based statistical model that uses averaging over Gaussian random-phases, picked up by the propagators, leads to several inconsistencies. This can be attributed to the failure of this model to dephase interference between complementary electron waves each following time-reversed path of the other.