Structural Observation of Voltage Induced Transitions in Neuromorphic Devices

ORAL

Abstract

Voltage induced phase transitions in VO2 and LSMO neuromorphic devices are one pathway to next generation computing. Barrier formation in LMSO has been limited to MOKE measurements, while filament formation in VO2 devices have been observed using optical reflectivity measurements. We present a pathway to observing the structural effects of a voltage induced phase transition in these devices using dark field x-ray microscopy. In addition, preliminary observations of the barrier formation in LSMO are presented and the difficulties with performing such measurements are discussed.

*This material is based upon work supported by the U.S. Department of Energy, Office of Science, Office of Workforce Development for Teachers and Scientists, Office of Science Graduate Student Research (SCGSR) program. The SCGSR program is administered by the Oak Ridge Institute for Science and Education for the DOE under contract number DE-SC0014664. This research used resources of the Advanced Photon Source, a U.S. Department of Energy (DOE) Office of Science user facility operated for the DOE Office of Science by Argonne National Laboratory under Contract No. DE-AC02-06CH11357. This work was supported as part of the "Quantum Materials for Energy Efficient Neuromorphic Computing" (Q-MEEN-C), an Energy Frontier Research Center funded by the U.S. Department of Energy, Office of Science, Basic Energy Sciences under the Award No. DESC0019273.

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Presenters

  • Elliot S Kisiel

    • University of California, San Diego

Authors

  • Elliot S Kisiel

    • University of California, San Diego

  • Ishwor Poudyal

    • Materials Science Division, Argonne National Laboratory

  • Pavel Salev

    • University of Denver
    • Department of Physics & Astronomy, University of Denver
    • University of California, San Diego - University of Denver

  • IVAN K SCHULLER

    • University of California, San Diego
    • Department of Physics, University of California San Diego
    • Department of Physics, University of California, San Diego

  • Alex Frano

    • UC San Diego
    • University of California, San Diego

  • Zahir Islam

    • Argonne National Laboratory