Local Electro-Optic Response of Strained SrTiO$_3$ Films Grown on DyScO$_3$

ORAL

Abstract

The electro-optical response of SrTiO$_3$ thin films grown on DyScO$_3$ substrates was studied with confocal scanning optical microscopy (CSOM) and apertureless near-field scanning optical microscopy (ANSOM). The polarization dependent electro-optical coefficients reveal that the c axis of the strained SrTiO$_3$ is oriented in-plane along the (110) and (-110)directions. The hysteretic electro-optic response at room temperature results from uniform strain in the SrTiO$_3$ film. Time-resolved ANSOM is used to study the domain dynamics at microwave frequencies. This work was supported by the National Science Foundation through grants DMR-0103354 and DMR-0333192, and the U.S. Department of Energy through contract W-31-109-ENG-38.

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Authors

  • Hongzhou Ma

  • Jeremy Levy

    • Dept. of Physics and Astronomy, University of Pittsburgh
    • Department of Physics and Astronomy, University of Pittsburgh, Pittsburgh, PA 15260
    • University of Pittsburgh
    • Surface Science Center, Center for Oxide Semiconductor Materials for Quantum Computation, Dept of Physics and Astronomy, Univ. of Pittsburgh

  • Mike D. Biegalski

  • Darrell G. Schlom

  • Susan Trolier-McKinstry

    • Materials Research Institute, Pennsylvania State University, University Park, PA 16802

  • R. Uecker

  • P. Reiche

    • Institute of Crystal Growth, Rudower Chaussee 6, D-12489 Berlin, Germany