Zeeman Effect on Magnetoresistance in High-Temperature Superconductors
A. G. AronovLeningrad Nuclear Physics Institute, Gatchina, Leningrad, 188350, U.S.S.R. Department of Pure and Applied Sciences, University of Tokyo, Meguro-ku, Komaba, Tokyo 153, Japan L. D. Landau Institute for Theoretical Physics, Ul Kosygina 2, 117940 GSP-1 Moscow, U.S.S.RS. HikamiLeningrad Nuclear Physics Institute, Gatchina, Leningrad, 188350, U.S.S.R. Department of Pure and Applied Sciences, University of Tokyo, Meguro-ku, Komaba, Tokyo 153, Japan L. D. Landau Institute for Theoretical Physics, Ul Kosygina 2, 117940 GSP-1 Moscow, U.S.S.RA. I. LarkinLeningrad Nuclear Physics Institute, Gatchina, Leningrad, 188350, U.S.S.R. Department of Pure and Applied Sciences, University of Tokyo, Meguro-ku, Komaba, Tokyo 153, Japan L. D. Landau Institute for Theoretical Physics, Ul Kosygina 2, 117940 GSP-1 Moscow, U.S.S.R
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Аннотация
The Zeeman effect on the magnetoresistance in high-temperature superconductors is investigated above the transition temperature. It is found that this effect is dominant for the positive magnetoresistance in a parallel magnetic field and the phase relaxation time ${\ensuremath{\tau}}_{\ensuremath{\phi}}$ can be estimated by a comparison of this term with experimental data for single-crystal films. This value is consistent with an estimate from the orbital effect of the Maki-Thompson term in a perpendicular magnetic field, and a temperature dependence of ${\ensuremath{\tau}}_{\ensuremath{\phi}}$ proportional to $\frac{1}{T}$ is obtained from the experimental data.
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