The origin of paramagnetic magnetization in field-cooled YBa2Cu3O7 films

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dc.creatorLuzhbin, D. A.
dc.creatorPan, A. V.
dc.creatorKomashko, V. A.
dc.creatorFlis, V. S.
dc.creatorPan, V. M.
dc.creatorDou, S. X.
dc.creatorEsquinazi, P.
dc.date2003-06-27
dc.date.accessioned2026-07-07T02:52:04Z
dc.date.available2026-07-07T02:52:04Z
dc.descriptionTemperature dependences of the magnetic moment have been measured in YBa_2Cu_3O_{7-δ} thin films over a wide magnetic field range (5 <= H <= 10^4 Oe). In these films a paramagnetic signal known as the paramagnetic Meissner effect has been observed. The experimental data in the films, which have strong pinning and high critical current densities (J_c ~ 2 \times 10^6 A/cm^2 at 77 K), are quantitatively shown to be highly consistent with the theoretical model proposed by Koshelev and Larkin [Phys. Rev. B 52, 13559 (1995)]. This finding indicates that the origin of the paramagnetic effect is ultimately associated with nucleation and inhomogeneous spatial redistribution of magnetic vortices in a sample which is cooled down in a magnetic field. It is also shown that the distribution of vortices is extremely sensitive to the interplay of film properties and the real experimental conditions of the measurements.
dc.descriptionRevTex, 8 figures
dc.identifierhttps://arxiv.org/abs/cond-mat/0306690
dc.identifierhttp://arxiv.org/abs/cond-mat/0306690
dc.identifierPhys. Rev. B 69, 024506 (2004)
dc.identifierdoi:10.1103/PhysRevB.69.024506
dc.identifier.urihttp://salesiana.dossiersoluciones.com/handle/123456789/21704
dc.subjectSuperconductivity
dc.titleThe origin of paramagnetic magnetization in field-cooled YBa2Cu3O7 films
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