Current-Driven Phase Oscillation and Domain-Wall Propagation in W$_{x}$V$_{1-x}$O$_{2}$ Nanobeams

ORAL

Abstract

We report the observation of a current-driven metal (M)-insulator (I) phase oscillation in two-terminal devices incorporating individual W$_{x}$V$_{1-x}$O$_{2}$ nanobeams connected in parallel with a shunt capacitor. The phase oscillation frequency reaches above 5 MHz for $\sim $1-$\mu $m-long devices. The M-I phase oscillation coincides with the charging/discharging of the capacitor and occurs through the axial drift of a single M-I domain wall driven by Joule heating and the Peltier effect.

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Authors

  • Abram Falk

    Harvard University

  • Qian Gu

    Harvard University

  • Junqiao Wu

    Harvard University

  • Lian Ouyang

    Department of Chemistry, Harvard University, Harvard University

  • Hongkun Park

    Harvard University, Department of Chemistry and Department of Physics, Harvard University