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Interstitial Oxygen Dopant Dynamics in La<sub>2</sub>CuO<sub>4+y</sub> Probed by Coherent X-rays

ORAL

Abstract

Oxygen doping La2CuO4 (LCO) yields the superconductor La2CuO4+y with the highest Tc in the LCO family. The interstitial oxygen dopants are mobile and can be annealed to form an ordered lattice, manifested as a satellite Bragg peak in x-ray diffraction. We present x-ray photon correlation spectroscopy (XPCS) data, measuring the dynamic timescale of the corresponding oxygen ordering diffraction peaks in order to infer the interstitial oxygen dopant mobility and its temperature dependence.

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Presenters

  • Mingde Jiang

    Stanford Univ

Authors

  • Mingde Jiang

    Stanford Univ

  • Wei He

    Stanford Univ, Department of Materials Science and Engineering, Stanford University, Department of Applied Physics, Stanford University

  • Jiajia Wen

    Stanford Univ, Department of Applied Physics, Stanford University, SLAC - Natl Accelerator Lab

  • Andrei Fluerasu

    NSLS-II, Brookhaven National Lab, National Synchrotron Light Source II, National Synchrotron Light Source II, Brookhaven National Laboratory, Brookhaven National Laboratory

  • Yugang Zhang

    NSLS-II, Brookhaven National Lab, National Synchrotron Light Source II, National Synchrotron Light Source II, Brookhaven National Laboratory, Brookhaven National Laboratory

  • Lutz Wiegart

    NSLS-II, Brookhaven National Lab, National Synchrotron Light Source II, National Synchrotron Light Source II, Brookhaven National Laboratory, Brookhaven National Laboratory

  • Young Sang Lee

    Stanford Univ, Department of Applied Physics, Stanford University, Stanford University