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Influence of plastic deformation on the structural and electronic properties of SrTiO<sub>3</sub> and KTaO<sub>3</sub>

ORAL

Abstract

Strontium titanate (SrTiO3, STO) and potassium tantalate (KTaO­3, KTO) are quantum paraelectrics with cubic perovskite structures at room temperature. These two materials serve as excellent candidates for plastic deformation because of their outstanding room temperature ductility. Recent work on plastically-deformed STO has shown an enhancement of the superconducting transition temperature and the emergence of local ferroelectricity near strain-induced self-organized dislocation walls [1]. Building on this study, we investigate the influence of compressive plastic deformation on the cubic-to-tetragonal structural transition in STO and on the structural and electronic properties of KTO.

References

[1] S. Hameed, D. Pelc, Z. W. Anderson, A. Klein, R. J. Spieker, L. Yue, B. Das, J. Ramberger, M. Lukas, Y. Liu, M. J. Krogstad, R. Osborn, Y. Li, C. Leighton, R. M. Fernandes, and M. Greven,. Nat. Mater. (2021). https://doi.org/10.1038/s41563-021-01102-3

*Work supported by the Department of Energy through the University of Minnesota Center for Quantum Materials under DE-SC0016371.

*Scattering Facilities are provided by the DOE User Facilities Division

 

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Publication: S. Hameed, D. Pelc, Z. W. Anderson, A. Klein, R. J. Spieker, L. Yue, B. Das, J. Ramberger, M. Lukas, Y. Liu, M. J. Krogstad, R. Osborn, Y. Li, C. Leighton, R. M. Fernandes, and M. Greven,. Nat. Mater. (2021). https://doi.org/10.1038/s41563-021-01102-3

Presenters

  • Issam Khayr

    School of Physics and Astronomy, University of Minnesota, University of Minnesota

Authors

  • Issam Khayr

    School of Physics and Astronomy, University of Minnesota, University of Minnesota

  • Sajna Hameed

    University of Minnesota, School of Physics and Astronomy, University of Minnesota

  • Damjan Pelc

    Univ of Zagreb, School of Physics and Astronomy, University of Minnesota

  • Matthew J Krogstad

    Argonne National Laboratory, Materials Science Division, Argonne National Laboratory

  • Raymond Osborn

    Argonne National Laboratory, Materials Science Division, Argonne National Laboratory

  • Yaohua Liu

    Oak Ridge National Lab, Oak Ridge National Laboratory, Neutron Scattering Division, Oak Ridge National Laboratory

  • Feng Ye

    Oak Ridge National Laboratory, Oak Ridge National Lab

  • Martin Greven

    University of Minnesota, School of Physics and Astronomy, University of Minnesota