High Field Phase Diagram of Cuprates Derived from the Nernst Effect

Yayu Wang, N. P. Ong, Z. A. Xu, T. Kakeshita, S. Uchida, D. A. Bonn, R. Liang, W. N. Hardy

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Abstract

Measurements of the Nernst signal in the vortex-liquid state of the cuprates to high fields (33 T) reveal that vorticity extends to very high fields even close to the zero-field critical temperature [Formula presented]. In overdoped [Formula presented], we show that the upper critical field [Formula presented] curve does not end at [Formula presented], but at a much higher temperature. These results imply that [Formula presented] corresponds to a loss in phase rigidity rather than a vanishing of the pairing amplitude. An intermediate field [Formula presented] is shown to be the field scale for the flux-flow resistivity.

Original languageEnglish (US)
Number of pages1
JournalPhysical review letters
Volume88
Issue number25
DOIs
StatePublished - Jan 1 2002

All Science Journal Classification (ASJC) codes

  • Physics and Astronomy(all)

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    Wang, Y., Ong, N. P., Xu, Z. A., Kakeshita, T., Uchida, S., Bonn, D. A., Liang, R., & Hardy, W. N. (2002). High Field Phase Diagram of Cuprates Derived from the Nernst Effect. Physical review letters, 88(25). https://doi.org/10.1103/PhysRevLett.88.257003