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Type: Artigo de periódico
Title: Superconducting Diamagnetic Fluctuations For H ∥ Ab Planes In Yba2cu3o7-δ For Fields Up To 5 T
Author: Salem-Sugui Jr. S.
da Silva E.Z.
Abstract: Magnetic measurements for a twin-aligned single crystal of YBa2Cu3O7δ were performed from 80 K to 200 K for fixed applied fields (H) up to 5T, parallel to the ab planes of the crystal. Magnetic fields, from 0.05 T to 1 T, produced isofield M vs T curves which exhibit sharp transitions that unambiguously identify Tc. Above H = 2 T, a field-enhanced rounding starts to appear in the isofield M vs T curves. This rounding effect in the vicinity of Tc is interpreted as due to high field-induced fluctuations in the 3D order parameter. By using an appropriate scaling, the ΔT fluctuation regions for H = 2, 3T are obtained. © 1994.
Rights: fechado
Identifier DOI: 10.1016/0038-1098(94)90539-8
Date Issue: 1994
Appears in Collections:Unicamp - Artigos e Outros Documentos

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