Disorder and Magnetic Field Dependence of Slow Electronic Relaxation

Zvi Ovadyahu and Michael Pollak
Phys. Rev. Lett. 79, 459 – Published 21 July 1997
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Abstract

We show that the relaxation of the excess conductivity in a hopping system driven far from equilibrium is systematically affected by static disorder and magnetic field. In following the glasslike relaxation for times much longer than has been done before we observe a new time dependence of the relaxation. A positive magnetoresistance and a strong effect of the magnetic field on the relaxation indicate that spins may play an important role in the nonequilibrium properties of such systems.

  • Received 8 November 1996

DOI:https://doi.org/10.1103/PhysRevLett.79.459

©1997 American Physical Society

Authors & Affiliations

Zvi Ovadyahu

  • The Racah Institute of Physics, The Hebrew University, Jerusalem 91904, Israel

Michael Pollak

  • Department of Physics, The University of California Riverside, California 92521

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Vol. 79, Iss. 3 — 21 July 1997

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