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

摘要

The area enclosed by hysteresis loops in a periodically forced bistable microscopic sys- the at zero-temperature is examined by using the time dependent Hellmnn-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 parea in designing field parameters for optimal control is suggested,