Authors: Malay Bandyopadhyay Sushanta Dattagupta
Publish Date: 2006/06/15
Volume: 123, Issue: 6, Pages: 1273-1284
Abstract
Using the path integral approach to equilibrium statistical physics the effect of dissipation on Landau diamagnetism is calculated The calculation clarifies the essential role of the boundary of the container in which the electrons move Further the derived result for diamagnetization also matches with the expression obtained from a timedependent quantum Langevin equation in the asymptotic limit provided a certain order is maintained in taking limits This identification then unifies equilibrium and nonequilibrium statistical physics for a phenomenon like diamagnetism which is inherently quantum and strongly dependent on boundary effects In addition we have shown that our results are directly connected with fluctuation induced diamagnetic susceptibility of superconducting grains
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