Quantum hysteresis loops in microscopic system: the loop area as a dynamical parameter

Mondal, Chandan Kumar ; Bhattacharyya, S. P. (2001) Quantum hysteresis loops in microscopic system: the loop area as a dynamical parameter Pramana - Journal of Physics, 56 (1). pp. 117-126. ISSN 0304-4289

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Official URL: http://www.ias.ac.in/pramana/v56/pL117/fulltext.pd...

Related URL: http://dx.doi.org/10.1007/s12043-001-0146-1

Abstract

The area enclosed by hysteresis loops in a periodically forced bistable microscopic system at zero-temperature is examined by using the time dependent Hellmann-Feynman theorem and the Fourier grid Hamiltonian recipe for solving time-dependent Schrodinger equation. Effects of non-zero temperatures are explored with reference to a symmetric double well potential. The barrier crossing or, relaxation rates are shown to correlate systematically with the area of the loop. The possible use of hysteresis loop area in designing field parameters for optimal control is suggested.

Item Type:Article
Source:Copyright of this article belongs to Indian Academy of Sciences.
Keywords:Quantum Hysteresis; Stochastic Resonance; Quantum Dynamics; Fourier Grid Methods; Stochastically Perturbed Systems
ID Code:3136
Deposited On:11 Oct 2010 10:09
Last Modified:16 May 2016 13:59

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