Field-induced suppression of the phase transition in Bi2Sr2CaCu2O8

P. H. Kes, C. J. Van Der Beek, M. P. Maley, M. E. McHenry, D. A. Huse, M. J.V. Menken, A. A. Menovsky

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Magnetization measurements in field on a Bi2Sr2CaCu2O8 single crystal do not reveal any sharp phase transition between the normal and superconducting states. The M(H) curves for temperatures about Tc in fields up to 5 T all display diamagnetic behavior. Above the mean-field transition temperature TcMF, quasi-two-dimensional diamagnetic fluctuations are responsible. Below TcMF strong deviations from the conventional mean-field (Abrikosov) behavior lead to an apparent Tc(B) inadequacy of the mean-field theory to describe the vortex state below the crossover line Hc2(T).

Original languageEnglish (US)
Pages (from-to)2383-2386
Number of pages4
JournalPhysical review letters
Issue number17
StatePublished - 1991
Externally publishedYes

All Science Journal Classification (ASJC) codes

  • General Physics and Astronomy


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