Ultrafast spectroscopy of the stripe phase of underdoped La$_{2-x}$Sr$_{x}$CuO$_{4}$ thin films

ORAL

Abstract

We have performed ultrafast measurements on high-T$_c$ thin films of underdoped La$_{2-x}$Sr$_{x}$CuO$_{4}$. In these experiments, femtosecond pulses create photoexcitations derived from both the superconducting and striped phase fraction whose evolution and decay are probed as a function of time. We discuss the separate dynamics of these two electronic components as a function of temperature and excitation density.

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Authors

  • Darius Torchinsky

    • MIT
    • Department of Physics, Massachusetts Institute of Technology, Cambridge MA 02139

  • Fahad Mahmood

    • MIT
    • Department of Physics, Massachusetts Institute of Technology, Cambridge MA 02139

  • A. Bollinger

    • Brookhaven National Laboratory

  • I. Bozovic

    • Brookhaven National Laboratory

  • Nuh Gedik

    • MIT
    • Department of Physics, Massachusetts Institute of Technology, Cambridge MA 02139
    • Massachusetts Institute of Technology