Anomalous magnetoresistance and hall current in the normal state of the cuprate superconductors

N. P. Ong, T. W. Jing, T. R. Chien, Z. Z. Wang, T. V. Ramakrishnan, J. M. Tarascon, K. Remschnig

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Experiments on the normal-state Hall effect in YBa2Cu3O7 and the normal-state magnetoresistance in Bi2Sr2CuO6(Bi 2201) are described. The strong temperature dependence of the Hall resistivity is shown to derive from a 'Hall scattering rate' 1/τH that varies as the square of temperature, in contrast to the transport scattering rate 1/τtr. Scattering from zinc impurities increases both rates. We compare our results with a recent theory of Anderson. Low-temperature magnetoresistance (MR) has been used to extract the dephasing rate 1/τφ in single-crystal Bi 2001. Between 0.4 and 20 K, 1/τφ varies as T 1 3. We discuss the anomalous enhancement of the dephasing rate and implications for the usual quasi-particle picture. The MR in a longitudinal field shows novel features that do not fi t conventional interaction theory.

Original languageEnglish (US)
Pages (from-to)34-39
Number of pages6
JournalPhysica C: Superconductivity and its applications
Issue numberPART 1
StatePublished - Dec 1 1991

All Science Journal Classification (ASJC) codes

  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics
  • Energy Engineering and Power Technology
  • Electrical and Electronic Engineering


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