Phys. Rev. Letters 77, 5265 (1996)

Universal Crossover between Efros-Shklovskii and Mott Variable-Range-Hopping Regimes

Yigal Meir
Physics Department, Ben Gurion University, Beer Sheva 84105, Israel
Institute of Theoretical Physics, University of California at Santa Barbara, Santa Barbara, California 93106

(Received 2 August 1996)

A universal scaling function, describing the crossover between the Mott and the Efros-Shklovskii hopping regimes, is derived using the percolation picture of transport in strongly localized systems. This function agrees very well with experimental data. Quantitative comparison with experiment allows for the possible determination of the role played by quasiparticles in transport.

©1996 The American Physical Society.

PACS: 72.20.Dp 05.60.+w 71.38.+i 71.55.Jv

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