Giant flux creep through the surface barriers and the irreversibility line in high-{Tc} superconductors

Conference · Sun May 01 00:00:00 EDT 1994

OSTI ID:10160968

Burlachkov, L ^[1]; Geshkenbein, V B ^[2]; Koshelev, A E ^[3]; Larkin, A I ^[2]; Vinokur, V M ^[3]

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1. Bar-Ilan Univ., Ramat-Gan (Israel)
2. Landau Inst. for Theoretical Physics, Moscow (Russian Federation)
3. Argonne National Lab., IL (United States)

Magnetic flux relaxation over the surface barrier in high temperature superconductors are investigated Vortex dynamics controlled by the penetration both of pancake vortices and vortex lines are discussed. The penetration field H{sub p} for pancakes decay is exponentially with temperature. The size of the magnetization loop is determined by the decay of H{sub p} during the process of relaxation, but its shape remains unchanged. The irreversibility line associated with the pancake penetration is given by H{sub irr} {proportional_to} exp(- 2T/T{sub o}), and may lie both above and below the melting line.

• Research Organization: Argonne National Lab., IL (United States)
• Sponsoring Organization: USDOE, Washington, DC (United States); National Science Foundation, Washington, DC (United States)
• DOE Contract Number: W-31109-ENG-38
• OSTI ID: 10160968
• Report Number(s): ANL/MSD/CP--82480; CONF-940701--8; ON: DE94013991; CNN: DMR91-20000
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
360207
HIGH-TC SUPERCONDUCTORS
MAGNETIC FLUX
RELAXATION