Simultaneous Study of Structure and Correlation-Driven Transitions via X-ray Standing Waves

POSTER

Abstract

The possibility of decoupling electronic phenomena from those of the lattice has been a hot topic when discussing correlated metal-insulator transition materials such as VO2, NbO2, or V2O3.[1] A mainly electronic transition could enable ultra-fast switching, thin film electronics, with little risk of the inevitable physical degradation associated with bulk structural transitions. However, the roles of structural (Peierls) and electron correlation (Mott) effects in driving these transitions continue to be debated in the literature.[2] Using x-ray standing waves (XSW) and high quality epitaxial thin films, we have now concurrently investigated both the structural and electronic transition within some of these correlated materials using a single technique, directly measuring their simultaneity or lack thereof for the first time. We discuss these results and their wider implications.

[1] Kalcheim, Y. et al. Robust Coupling between Structural and Electronic Transitions in a Mott Material. Phys. Rev. Lett. 122, 57601 (2019).
[2] Lee, W. C. et al. Cooperative effects of strain and electron correlation in epitaxial VO2 and NbO2. J. Appl. Phys. 125, 082539 (2019).

*This material is based upon work supported by the Air Force Office of Scientific Research under award number FA9550-18-1-0024.

Presenters

  • Matthew J. Wahila

    • Binghamton University
    • Department of Physics, Binghamton University
    • Physics, Applied Physics, and Astronomy, Binghamton University

Authors

  • Matthew J. Wahila

    • Binghamton University
    • Department of Physics, Binghamton University
    • Physics, Applied Physics, and Astronomy, Binghamton University

  • Galo J. Paez

    • Binghamton University
    • Physics, Applied Physics, and Astronomy, Binghamton University

  • Christopher Singh

    • Binghamton University
    • Physics, Binghamton University
    • Physics, Applied Physics, and Astronomy, Binghamton University

  • Nicholas F Quackenbush

    • Materials Measurement Science Division, Materials Measurement Laboratory, National Institute of Standards and Technology
    • National Institute of Standards and Technology

  • Hanjong Paik

    • Cornell University
    • Platform for the Accelerated Realization, Analysis, and Discovery of Interface Materials (PARADIM), Cornell University
    • PARADIM, Cornell University
    • Platform for the Accelerated Realization, Analysis, & Discovery of Interface Materials (PARADIM), Cornell University

  • Darrell Schlom

    • Cornell University
    • Department of Materials Science and Engineering, Cornell University
    • Department of Materials Science and Engineering, Kavli Institute at Cornell for Nanoscale Science, Cornell University
    • Materials Science and Engineering, Cornell University
    • Kavli Institute at Cornell for Nanoscale Science, Ithaca, New York 14853, USA
    • Platform for the Accelerated Realization, Analysis, & Discovery of Interface Materials (PARADIM), Cornell University

  • Tien-Lin Lee

    • Diamond Light Source
    • Diamond Light Source, UK
    • Diamond Light Source Limited is United Kingdom’s national synchrotron and is a leading scientific facility in the world. They host facilities supporting cutting edge researc
    • Diamond Light Source Ltd, Diamond House, Harwell Science & Innovation Campus

  • Wei-Cheng Lee

    • Binghamton University
    • Physics, Binghamton University
    • Physics, Applied Physics, and Astronomy, Binghamton University

  • Louis F. J. Piper

    • Binghamton University
    • Department of Physics, Binghamton University
    • Physics, Applied Physics, and Astronomy, Binghamton University