Prog. Theor. Phys. Vol. 43 No. 2 (1970) pp. 286-302

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Nonlinear Response above the Superconducting Transition Point. III

— Ginzburg-Landau-Gorkov Approximation —

Toshio Tsuzuki

Department of Physics, Kyushu University, Fukuoka

(Received September 27, 1969)

Abstract:

The nonlinear excess conductivity due to the pair fluctuation is recalculated in the Ginzburg-Landau-Gorkov approximation. The nonlinear effect is very sensitive to the purity of sample, and the reduction from the Aslamazov-Larkin formula is not small. The width of the transition becomes narrower in a pure sample due to the nonlinear effect. Discussions of the experiments and of the future problems are given.
The possibility of applying the Langevin method to the Ginzburg-Landau equation is microscopically established in order to explain the critical phenomena in the classical range of temperature.

URL : http://ptp.ipap.jp/link?PTP/43/286/
DOI : 10.1143/PTP.43.286

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Citing Article(s) :

Progress of Theoretical Physics Vol. 45 No. 3 (1971) pp. 693-703 :
Microscopic Theory of the Nonlinear Excess Current of Superconducting Thin Films near T_c

Kunihiko Yamaji
Progress of Theoretical Physics Vol. 45 No. 4 (1971) pp. 997-1008 :
Nonlinear Response above the Superconducting Transition Point. IV

Masao Koyanagi and Toshio Tsuzuki
Progress of Theoretical Physics Vol. 45 No. 4 (1971) pp. 1016-1020 :
Nonlinear Field Dependence of Electric Conductivity above the Superconducting Transition

Kazumi Maki
Progress of Theoretical Physics Vol. 48 No. 1 (1972) pp. 1-18 :
On the Nonperturbational Calculation of Critical Anomalies of Superconductors in External Fields

Masao Koyanagi