A new understanding of the resistive state and the V-I characteristic of high-Tc superconductors |
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| Authors: | D. Yin W. Schauer V. Windte H. Küpfer S. Zhang J. Chen |
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| Affiliation: | (1) Kernforschungszentrum Karlsruhe, Institut für Technische Physik, Postfach 3640, D-76021 Karlsruhe, Germany;(2) Kernforschungszentrum Karlsruhe, Institut für Materialforschung, Postfach 3640, D-76021 Karlsruhe, Germany;(3) Department of Physics, Peking University, 100871 Beijing, People's Republic of China |
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| Abstract: | Bardeen-Stephen dissipation in the regime of thermally activated flux flow (TAFF) and flux creep has been considered with respect to its contribution to the activation energy for thermally initiated flux movement. The inclusion of this flux flow dissipation term leads to a new expression for the voltage-current (V-I, or E-J) characteristics. The extended model describes the flux dynamics in the three regimes of flux movement: TAFF, creep, and flux flow, in a satisfactory way and explains the main experimental observations. |
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| Keywords: | 74.60.Ge 74.70.Vy |
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