Giant flux creep through surface barriers and the irreversibility line in high-temperature superconductors
- Department of Physics, Bar-Ilan University, Ramat-Gan 52900 (Israel)
- Landau Institute for Theoretical Physics, Moscow 117940, (Russian Federation) in Weizmann Institute of Science, Rehovot 76100, (Israel) Theoretische Physik, Eidgenoessische Technische Hochschule Zuerich-Honggerberg, CH-8093 Zurich (Switzerland)
- Argonne National Laboratory, Argonne, Illinois 60439 (United States) Institute for Solid State Physics, Chernogolovka 142432 (Russian Federation)
- Landau Institute for Theoretical Physics, Moscow 117940, (Russian Federation) xnHonggerberg, CH-8093 Zurich (Switzerland) Weizmann Institute of Science, Rehovot 76100, (Israel) Argonne National Laboratory, Argonne, Illinois 60439 (United States)
- Argonne National Laboratory, Argonne, Illinois 60439 (United States)
Magnetic and transport phenomena in high-temperature superconductors due to magnetic flux relaxation and transport over the surface barrier are investigated. Vortex dynamics controlled by the penetration both of pancake vortices and vortex lines is discussed. The penetration field [ital H][sub [ital p]] for pancakes decays exponentially with temperature. The size of the magnetization loop is determined by the decay of [ital H][sub [ital p]] during the process of relaxation, but its shape remains unchanged. The irreversibility line associated with the pancake penetration is given by [ital H][sub irr] [proportional to]exp([minus]2[ital T]/[ital T][sub 0]) and may lie both above and below the melting line.
- Research Organization:
- Argonne National Laboratory (ANL), Argonne, IL
- DOE Contract Number:
- W-31109-ENG-38
- OSTI ID:
- 7093883
- Journal Information:
- Physical Review, B: Condensed Matter; (United States), Journal Name: Physical Review, B: Condensed Matter; (United States) Vol. 50:22; ISSN PRBMDO; ISSN 0163-1829
- Country of Publication:
- United States
- Language:
- English
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