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Experiments on scaling and variable range hopping in the integral quantum Hall effect

✍ Scribed by K.-H. Yoo; H.C. Kwon; J.C. Park

Publisher
Elsevier Science
Year
1994
Tongue
English
Weight
283 KB
Volume
92
Category
Article
ISSN
0038-1098

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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.