Crossover phenomenon for hopping conduction in strong magnetic fields

I. Shlimak, M. Kaveh, M. Yosefin, M. Lea, P. Fozooni

Research output: Contribution to journalArticlepeer-review

43 Scopus citations

Abstract

We find that strong magnetic fields reduce the effectiveness of the Coulomb gap in determining the variable-range-hopping (VRH) resistivity. We propose a crossover phenomenon characterized by a temperature Tc with the Coulomb gap affecting the VRH resistivity only below Tc. The value of Tc decreases as the magnetic field increases. Our theoretical model explains the observed crossover from a ln (H=0) T-1/2 law to a ln (H) [T0(H)/T]1/3 law with T0H.

Original languageEnglish
Pages (from-to)3076-3079
Number of pages4
JournalPhysical Review Letters
Volume68
Issue number20
DOIs
StatePublished - 1992

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