Resistivity and Hall effect measurements in Pr$_{2-x}$Ce$_{x}CuO$_{4-y }$ up to 60T

ORAL

Abstract

We report resistivity and Hall effect measurements in the electron-doped cuprate system Pr$_{2-x}$Ce$_{x}$CuO$_{4-y}$ in magnetic field up to 60T. We found negative magnetoresistance (MR) in the underdoped region for all magnetic field values, similar to the low field data reported previously$^{a}$. The MR becomes positive at high field in the optimal doped (x=0.15) sample at low temperature. Most surprisingly, we observed a substantial magnetic field dependence of the Hall coefficient at high field (above $\sim $40T) in optimal doped and overdoped samples (from x=0.15 to 0.19) in a certain temperature range. A spin density wave induced Fermi surface reconstruction model can be used to explain this phenomenon. We also report for the first time the parallel upper critical field (H//ab plane) for Pr$_{2-x}$Ce$_{x}$CuO$_{4-y}$. (a. Y. Dagan et al., Physical Review Letters 94 (5) 11 2005)

*This work is supported by NSF Grant DMR-0352735

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Authors

  • Richard Greene

    • Center for Superconductivity Research, University of Maryland, College Park
    • Center for Superconductivity Research, Department of Physics, University of Maryland, College Park, Maryland 20742, USA.
    • Center for Superconductivity Research and Department of Physics, University of Maryland, College Park, MD, 20742
    • Center for Superconductivity Research, University of Maryland, College Park, MD

  • Pengcheng Li

    • Center for Superconductivity Research and Department of Physics, University of Maryland, College Park, MD, 20742

  • Fedor Balakirev

    • National High Magnetic Field Lab in Los Alamos National Lab, Los Alamos, NM, 87545
    • Los Alamos National Laboratory