Bose-glass melting in YBaCuO crystals with correlated disorder
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 fiel...
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Veröffentlicht in: | Physical review letters 1994-03, Vol.72 (12), p.1914-1917 |
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container_issue | 12 |
container_start_page | 1914 |
container_title | Physical review letters |
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creator | Krusin-Elbaum, L Civale, L Blatter, G Marwick, AD Holtzberg, F Feild, C |
description | 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. |
doi_str_mv | 10.1103/PhysRevLett.72.1914 |
format | Article |
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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. 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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. 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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.</abstract><cop>United States</cop><pmid>10055736</pmid><doi>10.1103/PhysRevLett.72.1914</doi><tpages>4</tpages></addata></record> |
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subjects | 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 MATERIALS SCIENCE MELTING OXIDES OXYGEN COMPOUNDS PHASE DIAGRAMS PHASE TRANSFORMATIONS PHYSICAL RADIATION EFFECTS RADIATION EFFECTS SUPERCONDUCTORS TRANSITION ELEMENT COMPOUNDS VORTICES YTTRIUM COMPOUNDS YTTRIUM OXIDES |
title | Bose-glass melting in YBaCuO crystals with correlated disorder |
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