Magnetic-field-induced crossover from Mott variable-range hopping to weakly insulating behavior

Journal Article · Sun Mar 31 23:00:00 EST 1996 · Physical Review, B: Condensed Matter

DOI:https://doi.org/10.1103/PhysRevB.53.9528· OSTI ID:280223

Friedman, J R; Zhang, Y; Dai, P; Sarachik, M P ^[1]

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1. Physics Department, City College of the City University of New York, New York, New York 10031 (United States)

In three-dimensional {ital n}-CdSe samples that obey Mott variable-range hopping, {rho}={rho}{sub 0}exp({ital T}{sub 0}/{ital T}){sup 1/4}, in the absence of a magnetic field, we report a field-induced crossover at low temperatures to a resistivity that exhibits a weak power-law divergence, {rho}={rho}{sub 0}{ital T}{sup {minus}{alpha}}, with an exponent {alpha} that decreases slowly with increasing field. {copyright} {ital 1996 The American Physical Society.}

• DOE Contract Number: FG02-84ER45153
• OSTI ID: 280223
• Journal Information: Physical Review, B: Condensed Matter, Journal Name: Physical Review, B: Condensed Matter Journal Issue: 15 Vol. 53; ISSN 0163-1829; ISSN PRBMDO
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
CADMIUM SELENIDES
CRITICAL TEMPERATURE
CZOCHRALSKI METHOD
DIELECTRIC MATERIALS
ELECTRIC CONDUCTIVITY
ELECTRICAL INSULATORS
INDIUM ADDITIONS
MAGNETIC FIELDS
MAGNETORESISTANCE
METALS
MONOCRYSTALS
N-TYPE CONDUCTORS
PHASE STUDIES
TEMPERATURE DEPENDENCE
TEMPERATURE RANGE 0000-0013 K
THERMODYNAMIC ACTIVITY