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Ultrafast detection of coherent wrinkling on a freestanding functional oxide thin film

ORAL

Abstract

Complex oxides have long been known as hosts for many fascinating phenomena such as superconductivity and colossal magnetoresistance. Recently, the successful synthesis of freestanding thin films of complex oxides opened up new ways of probing and controling these materials. In this work, by using ultrafast electron diffraction (UED), we reconstruct the real-space wrinkling dynamics due to a photoinduced coherent acoustic phonon in La2/3Ca1/3MnO3 freestanding thin films. From the wrinkling in the freestanding thin film, we further extract information on thin film morphology as well as strain properties with picosecond time resolution.

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Presenters

  • Yifan Su

    Massachusetts Institute of Technology

Authors

  • Yifan Su

    Massachusetts Institute of Technology

  • Alfred Zong

    University of California, Berkeley, Massachusetts Institute of Technology MIT, Massachusetts Institute of Technology

  • Anshul Kogar

    Massachusetts Institute of Technology MIT, Massachusetts Institute of Technology

  • Di Lu

    Stanford University

  • Seung Sae Hong

    University of California, Davis, Stanford University

  • Byron Freelon

    Department of Physics and Texas Center for Superconductivity, University of Houston, Massachusetts Institute of Technology

  • Timm Rohwer

    Massachusetts Institute of Technology

  • Harold Hwang

    Department of Applied Physics, Stanford University, Stanford Institute for Materials and Energy Sciences, SLAC - Natl Accelerator Lab, Stanford Univ, Stanford Institute for Materials and Energy Sciences, SLAC National Accelerator Laboratory, Stanford University, Standford University, Stanford Institute for Materials and Energy Sciences, Stanford University and SLAC National Accelerator Laboratory, SIMES, SLAC, Applied Physics, Stanford University

  • Nuh Gedik

    Massachusetts Institute of Technology MIT, Massachusetts Institute of Technology