Resistive switching duality: insulator-to-metal vs. metal-to-insulator switching

ORAL

Abstract

Electrical triggering of metal-insulator transitions offers an opportunity to build energy-efficient and scalable electronics. While insulator-to-metal (I-M) switching in materials such as VO2 is thoroughly studied, much less is known about an opposite metal-to-insulator (M-I) switching. We present a detailed study of M-I switching in (La,Sr)MnO3 (LSMO). Negative differential resistance (NDR) region in the I-V characteristic is necessary for the resistive switching. By comparing LSMO to VO2, we observe an interesting duality: the N-type NDR in LSMO is a “mirror reflection” of the S-type NDR in VO2. Using Kerr effect imaging, we found that an insulating blocking domain perpendicular to the current flow forms in the LSMO during the NDR. This behavior is reciprocal to VO2 in which a conducting filament parallel to the current flow emerges during the NDR. M-I and I-M resistive switchings complement each other providing a broad range of nonlinear electrical properties, which could allow designing of complex electronic devices.

*This work was supported as part of the Quantum Materials for Energy Efficient Neuromorphic Computing (Q-MEEN-C) Energy Frontier Research Center (EFRC), funded by the U.S. Department of Energy, Office of Science, Basic Energy Sciences under Award # DE-SC0019273.

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Presenters

  • Pavel Salev

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

Authors

  • Pavel Salev

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

  • Rani Berkoun

    • Laboratoire de Physique des Solides, CNRS

  • Dayne Sasaki

    • University of California, Davis

  • Javier del Valle

    • University of California, San Diego
    • Center for Advanced Nanoscience, Department of Physics, University of California-San Diego
    • Department of Physics, University of California San Diego
    • UCSD

  • Yoav Kalcheim

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

  • Yayoi Takamura

    • University of California, Davis
    • Department of Materials Science and Engineering, University of California Davis

  • Marcelo Rozenberg

    • Laboratoire de Physique des Solides, CNRS
    • CNRS Laboratoire de Physique des Solides

  • Ivan Schuller

    • University of California, San Diego
    • Department of Physics, University of California San Diego
    • Center for Advanced Nanoscience, Department of Physics, University of California-San Diego