Scaling Analysis of the Variable Range H
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R. Rentzsch; O. Chiatti; M. MΓΌller; A.N. Ionov
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Article
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2002
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John Wiley and Sons
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English
β 123 KB
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Isotopic mixtures of 70 Ge and 74 Ge (Isotopically Engineered: IE-Ge) were by a neutron-transmutation doping (NTD) process provided with a high compensation of K = N As /N Ga ffi 0.4, 0.6, 0.9. Variable range hopping (vrh) resistivity at T = 0.1-4.2 K shows r(T) = r 0 exp(T 0 /T) 1/2 . At K = 0.4-0.