123 citations · 185 across the 7 of their papers we have counts for
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Low temperature Thermodynamics in the Context of Dissipative Diamagnetism
Jishad Kumar, P. A. Sreeram, Sushanta Dattagupta
We revisit here the effect of quantum dissipation on the much - studied problem of Landau diamagnetism, and analyze the results in the light of the third law of thermodynamics. The…
Memory in nanomagnetic systems: Superparamagnetism versus Spinglass behavior
Malay Bandyopadhyay, Sushanta Dattagupta
The slow dynamics and concomitant memory (aging) effects seen in nanomagnetic systems are analyzed on the basis of two separate paradigms : superparamagnets and spinglasses. It is…
Landau-Drude Diamagnetism: Fluctuation, Dissipation and Decoherence
Malay Bandyopadhyay, Sushanta Dattagupta
Starting from a quantum Langevin equation (QLE) of a charged particle coupled to a heat bath in the presence of an external magnetic field, we present a fully dynamical calculation…
Diffusion Enhancement in a Periodic Potential under High-Frequency Space-Dependent Forcing
Malay Bandyopadhyay, Sushanta Dattagupta, Monamie Sanyal
We study the long-time behavior of underdamped Brownian particle moving through a viscous medium and in a systematic potential, when it is subjected to a space-dependent high-frequ…
Dissipative Diamagnetism -- A Case Study for Equilibrium and Nonequilibrium Statistical Mechanics of Mesoscopic Systems
Malay Bandyopadhyay, Sushanta Dattagupta
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…