Magnetoresistance in the normal state of La1.925Sr0.075CuO4+δ

A. Lacerda, J. P. Rodriguez, M. F. Hundley, Z. Fisk, P. C. Canfield, J. D. Thompson, S. W. Cheong

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18 Scopus citations


The in-plane magnetoresistance of a high-quality single crystal of La1.925Sr0.075CuO4+δ has been measured in both the high-symmetry transverse geometry and in the longitudinal geometry. In both orientations, the magnetoresistance is positive and shows conventional weak-field behavior. The measured longitudinal magnetoresistance, however, is found to be almost an order of magnitude smaller than the measured transverse magnetoresistance. A semiphenomenological theory based on anisotropic scattering from hypothesized hole-pocket Fermi surfaces is introduced, which can account for the latter positive effect, as well as for known Hall-effect measurements. We predict that, in the limit corresponding to perfectly coherent in-plane hole motion along (π,π), there should be no saturation effect in the high-symmetry transverse magnetoresistance.

Original languageEnglish (US)
Pages (from-to)9097-9102
Number of pages6
JournalPhysical Review B
Issue number13
StatePublished - 1994
Externally publishedYes

All Science Journal Classification (ASJC) codes

  • Condensed Matter Physics


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