Superfluid-inspired spintronics

ORAL

Abstract

Superfluidity, i.e. coherent flow of a physical quantity in the absence of dissipation, is a fascinating condensed matter phenomena, which presents opportunities for constructing energy-efficient information processing devices. Easy-plane magnets are known to support such superfluid-like transport of spin, which have remained largely unexplored for information processing applications due to the absence of efficient knobs to control magnets. More recently, the ability to engineer spin-orbit interaction in magnetic systems, has emerged as a universal energy-efficient knob to control magnetic order via electrical and thermal means. In this talk, we will present how this “spin-orbitronic” control of magnets allows for uncovering a new class of spin-based phenomenon and devices, inspired from the well-established superfluid-like phenomenon observed in charged superfluids (i.e. superconductors). Firstly, we demonstrate the possibility of manipulating domain walls by coherent spin currents transported in spin superfluids. Secondly, we will demonstrate an electrically tunable magnetic phase-slip oscillator inspired from one-dimensional superconducting Josephson junctions.

*This work was supported by FAME (a SRC STARnet center sponsored by MARCO and DARPA)

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Presenters

  • Pramey Upadhyaya

    • University of California, Los Angeles
    • Electrical and Computer Engineering, Purdue Univ

Authors

  • Pramey Upadhyaya

    • University of California, Los Angeles
    • Electrical and Computer Engineering, Purdue Univ

  • Yuxiang Liu

    • Univ of California - Los Angeles
    • Electrical Engineering, University of California Los Angeles

  • Se Kwon Kim

    • Physics, University of California Los Angeles
    • Univ of California - Los Angeles
    • Physics and Astronomy, Univ of California - Los Angeles
    • Physics and Astronomy, University of California Los Angeles
    • Department of Physics and Astronomy, University of California Los Angeles

  • Yaroslav Tserkovnyak

    • University of California, Los Angeles
    • Physics, University of California Los Angeles
    • Department of Physics and Astronomy, Univ of California - Los Angeles
    • Physics and Astronomy, University of California, Los Angeles
    • Univ of California - Los Angeles
    • Physics and Astronomy, Univ of California - Los Angeles
    • Physics and Astronomy, University of California Los Angeles
    • Department of Physics and Astronomy, University of California, Los Angeles
    • Physics, Univ of California - Los Angeles
    • Department of Physics and Astronomy, University of California Los Angeles