Polaron Glass in La$_{0.35}$Pr$_{0.275}$Ca$_{0.375}$MnO$_3$

ORAL

Abstract

Manganite compounds in the La$_{1-x-y}$Pr$_y$Ca$_x$MnO$_3$ series are known for exhibiting phase separation over a large temperature range. We combined the x-ray photoemission electron microscopy (PEEM) and resonant elastic soft x-ray scattering (REXS) techniques to study the interplay between the ferromagnetic and charge-ordered/antiferromagnetic phases, respectively, in La$_{0.35}$Pr$_{0.275}$Ca$_{0.375}$MnO$_3$. We found a polaronic glassy state at intermediate temperatures, when the material is dominated by charge- and orbital-order domains. When the sample is cooled below T$_{\mathrm{C}}$, the magnetization increases, accompanied by a relaxation of the lattice deformations that accompany the polaron glass.

*This Work and the Advanced Light Source are funded by the DOE Office of Basic Energy Science.

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Authors

  • Mark Burkhardt

    • SIMES, Stanford
    • Stanford University and SLAC National Accelerator Laboratory

  • M.A. Hossain

    • SLAC National Accelerator Laboratory

  • S. Sarkar

    • SLAC National Accelerator Laboratory

  • J. St\"ohr

    • SLAC National Accelerator Laboratory

  • Y.-D. Chuang

    • Advanced Light Source, Lawrence Berkeley National Laboratory

  • A.G. Cruz Gonzalez

    • Advanced Light Source, Lawrence Berkeley National Laboratory

  • A. Doran

    • Advanced Light Source, Lawrence Berkeley National Laboratory

  • A. Scholl

    • Advanced Light Source, Lawrence Berkeley National Laboratory

  • A.T. Young

    • Advanced Light Source, Lawrence Berkeley National Laboratory

  • Y.J. Choi

    • Rutgers Center for Emergent Materials and Department of Physics \& Astronomy

  • S.-W. Cheong

    • Rutgers Center for Emergent Materials and Department of Physics \& Astronomy