Specific Heat Anomaly and Adiabatic Hysteresis in Disordered Electron Systems in a Magnetic Field

Details Specific Heat Anomaly and Adiabatic Hysteresis in Disordered Electron Systems in a Magnetic Field Specific Heat Anomaly and Adiabatic Hysteresis in Disordered Electron Systems in a Magnetic Field

1998-04-22

arxiv.org/abs/cond-mat/9804239v2

Eur. Phys. J. B7, 175-178 (1999)

Physics

Condensed Matter

Strongly Correlated Electrons

4 pages, RevTeX, 3 figures, accepted by EPJ B

Scientific paper

10.1007/s100510050601

We consider the thermodynamic behavior of a disordered interacting electron system in two dimensions. We show that the corrections to the thermodynamic potential in the weakly localized regime give rise to a non monotonic behavior of the specific heat both in temperature and magnetic field. From this effect we predict the appearance of adiabatic hysteresis in the magnetoconductance. Our results can be interpreted as precursor effect of formation of local moments in disordered electron systems. We also comment on the relevance of our analysis in three dimensional systems.

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