Experimental evidence for Bose-glass behavior in Bi[sub 2]Sr[sub 2]CaCu[sub 2]O[sub 8] crystals with columnar defects

Journal Article · Tue Jan 31 23:00:00 EST 1995 · Physical Review, B: Condensed Matter; (United States)

DOI:https://doi.org/10.1103/PhysRevB.51.3957· OSTI ID:6641367

Konczykowski, M; Chikumoto, N ^[1]; Vinokur, V M ^[2]; Feigelman, M V ^[3]

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1. Laboratoire des Solides Irradies, Ecole Polytechnique, 91128 Palaiseau (France)
2. Material Science Division, Argonne National Laboratory, Argonne, Illinois 60439 (United States)
3. Landau Institute for Theoretical Physics, 117940 Moscow (Russian Federation)

Giant, strongly nonlogarithmic, magnetic relaxation was observed in BSCCO-2212 crystals irradiated with 5.8-GeV Pb ions due to flux pinning in columnar defects. The underlying flux-creep mechanism was identified as a vortex-loop nucleation process proposed by Nelson and Vinokur [Phys. Rev. Lett. 68, 2398 (1992)]. The crossover in the creep regime from depinning from a single rod to variable-range hopping was observed as a function of rod density. Another type of crossover, from combined pinning involving preexisting defects to purely columnar defect pinning, was observed on crossing the irreversibility line of the pristine material.

• DOE Contract Number: W-31109-ENG-38
• OSTI ID: 6641367
• Journal Information: Physical Review, B: Condensed Matter; (United States), Journal Name: Physical Review, B: Condensed Matter; (United States) Vol. 51:6; ISSN PRBMDO; ISSN 0163-1829
• Country of Publication: United States
• Language: English

Related Subjects

665411* -- Basic Superconductivity Studies-- (1992-)
75 CONDENSED MATTER PHYSICS
SUPERCONDUCTIVITY AND SUPERFLUIDITY
ALKALINE EARTH METAL COMPOUNDS
BISMUTH COMPOUNDS
BISMUTH OXIDES
CALCIUM COMPOUNDS
CALCIUM OXIDES
CHALCOGENIDES
COPPER COMPOUNDS
COPPER OXIDES
CRYSTAL DEFECTS
CRYSTAL STRUCTURE
GLASS
HIGH-TC SUPERCONDUCTORS
LINE DEFECTS
MELTING
OXIDES
OXYGEN COMPOUNDS
PHASE TRANSFORMATIONS
RELAXATION
STRONTIUM COMPOUNDS
STRONTIUM OXIDES
SUPERCONDUCTORS
TRANSITION ELEMENT COMPOUNDS
VORTICES