Negative magnetoresistance in the c-axis resistivity of Bi2Sr2CaCu2O8 and YBa2Cu3O6+x

Y. F. Yan, P. Matl, J. M. Harris, Nai Phuan Ong

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Abstract

The c-axis resistivity c in Bi2Sr2CaCu2O8 and oxygen-reduced YBa2Cu3O6+x is quite sensitive to a magnetic field H. The magnetoresistance (MR) is large (1% at 14 T and 100 K), weakly anisotropic, and negative over a wide range of temperatures T above the critical temperature Tc. The magnitude of the MR is activated in temperature with a characteristic energy UL that varies with the oxygen content. We interpret the activated form of c and the negative MR in terms of a pseudogap that is slightly reduced by H.

Original languageEnglish (US)
JournalPhysical Review B
Volume52
Issue number2
DOIs
StatePublished - Jan 1 1995

All Science Journal Classification (ASJC) codes

  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics

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