期刊
JOURNAL OF PHYSICS-CONDENSED MATTER
卷 18, 期 46, 页码 10469-10480出版社
IOP PUBLISHING LTD
DOI: 10.1088/0953-8984/18/46/014
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Magnetic transport properties in Ti(1-x)CoxO(2) and Zn(1-x)CoxO magnetic semiconductors have been studied experimentally and theoretically. A linear relation of ln rho versus T-1/2 (. is sheet resistance and T is temperature), which shows different slopes and intersections at different magnetic fields, was observed experimentally in the low temperature range. The spin-dependent variable range hopping model has been proposed by taking into account the electron - electron Coulomb interaction and the spin - spin exchange interaction in the same frame, which can well describe the observed magnetic transport properties in Ti1-xCoxO2 and Zn1-xCoxO magnetic semiconductors.
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