Bose-glass melting in YBaCuO crystals with correlated disorder

Journal Article · Mon Mar 21 04:00:00 EST 1994 · Physical Review Letters; (United States)

DOI:https://doi.org/10.1103/PhysRevLett.72.1914· OSTI ID:5089540

Krusin-Elbaum, L; Civale, L; Blatter, G; Marwick, A D; Holtzberg, F; Feild, C ^[1]

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1. IBM Thomas J. Watson Research Center, Yorktown Heights, New York 10598-0218 (United States) Eidgenoessische Technische Hochschule Zuerich-Hoenggerberg, CH-8093 Zuerich (Switzerland)

We report a [ital sharp] melting transition of the Bose glass in YBaCuO crystals with columnar defects installed by the irradiation with 1 GeV Au ions. The melting [ital B][sub BG]([ital T]) is tracked at low fields by the irreversibility line, which undergoes a remarkable abrupt crossover at a field [ital B][sub cr] for the vortices aligned with columns along the [ital c] axis. Below [ital B][sub cr], the upward curvature of [ital B][sub BG][proportional to](1[minus][ital T]/[ital T][sub [ital c]])[sup [alpha]] increases with the pin density (the exponent [alpha] grows from the clean value of [similar to]4/3 to [similar to]2 at the highest irradiation doses), in quantitative agreement with the theory of melting in the presence of correlated disorder. Above [ital B][sub cr], the linear in [ital T] irreversibility line is consistent with a transition into a (super)entangled vortex liquid.

• DOE Contract Number: AC05-84OR21400
• OSTI ID: 5089540
• Journal Information: Physical Review Letters; (United States), Journal Name: Physical Review Letters; (United States) Vol. 72:12; ISSN 0031-9007; ISSN PRLTAO
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
360607* -- Other Materials-- Superconducting Properties-- (1992-)
ALKALINE EARTH METAL COMPOUNDS
BARIUM COMPOUNDS
BARIUM OXIDES
BEAMS
BOSE-EINSTEIN STATISTICS
CHALCOGENIDES
COPPER COMPOUNDS
COPPER OXIDES
CRYSTAL DEFECTS
CRYSTAL STRUCTURE
DIAGRAMS
HIGH-TC SUPERCONDUCTORS
ION BEAMS
MELTING
OXIDES
OXYGEN COMPOUNDS
PHASE DIAGRAMS
PHASE TRANSFORMATIONS
PHYSICAL RADIATION EFFECTS
RADIATION EFFECTS
SUPERCONDUCTORS
TRANSITION ELEMENT COMPOUNDS
VORTICES
YTTRIUM COMPOUNDS
YTTRIUM OXIDES