Inhomogeneous magnetic-field response of YBa2Cu3Oy and La2-xSrxCuO4 persisting above the bulk superconducting transition temperature

We report that in YBa2Cu3Oy and La2-xSrxCuO4 there is a spatially inhomogeneous response to the magnetic field for temperatures T extending well above the bulk-superconducting transition temperature Tc. An inhomogeneous magnetic response is observed above Tc even in ortho-II YBa2Cu3O6.50, which has...

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Veröffentlicht in:Physical review letters 2008-09, Vol.101 (11), p.117001-117001
Hauptverfasser: Sonier, J E, Ilton, M, Pacradouni, V, Kaiser, C V, Sabok-Sayr, S A, Ando, Y, Komiya, S, Hardy, W N, Bonn, D A, Liang, R, Atkinson, W A
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container_end_page 117001
container_issue 11
container_start_page 117001
container_title Physical review letters
container_volume 101
creator Sonier, J E
Ilton, M
Pacradouni, V
Kaiser, C V
Sabok-Sayr, S A
Ando, Y
Komiya, S
Hardy, W N
Bonn, D A
Liang, R
Atkinson, W A
description We report that in YBa2Cu3Oy and La2-xSrxCuO4 there is a spatially inhomogeneous response to the magnetic field for temperatures T extending well above the bulk-superconducting transition temperature Tc. An inhomogeneous magnetic response is observed above Tc even in ortho-II YBa2Cu3O6.50, which has highly ordered doping. The degree of the field inhomogeneity above Tc tracks the hole-doping dependences of both Tc and the density of the superconducting carriers below Tc, and therefore is apparently coupled to superconductivity.
doi_str_mv 10.1103/PhysRevLett.101.117001
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title Inhomogeneous magnetic-field response of YBa2Cu3Oy and La2-xSrxCuO4 persisting above the bulk superconducting transition temperature
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