Superfluid-inspired spintronics*

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.