Exploiting Coherence in Nonlinear Spin-Superfluid Transport

Abstract

We show how the interference between superfluid spin currents can endow spin circuits with coherent logic functionality. While the hydrodynamic aspects of the linear-response collective spin transport obviate interference features, we focus on the nonlinear regime, where the critical supercurrent is sensitive to the phase accumulated by the condensate in a loop geometry. We propose to control this phase by electrical gating, tuning the spin-condensate coherence length. The nonlinear aspects of the spin superfluidity thus naturally lend themselves to the construction of logic gates, uniquely exploiting the coherence of collective spin currents. Vice versa, this functionality can be used to reveal the fundamental properties of spin superfluids.

6 pages, 3 figures

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Cited by in corpus (13)

• Roadmap on Spin-Wave Computing
• Spin hydrodynamics in amorphous magnets
• Classical analog of qubit logic based on a magnon Bose-Einstein condensate
• Energy Storage via Topological Spin Textures
• Evolution of room-temperature magnon gas toward coherent Bose-Einstein condensate
• Control of the Bose-Einstein Condensation of Magnons by the Spin-Hall Effect
• Spin-Wave Doppler Shift by Magnon Drag in Magnetic Insulators
• Self-stabilizing exchange-mediated spin transport
• Transport properties of spin superfluids: comparing easy-plane ferro- and antiferromagnets
• Confinement of Bose-Einstein magnon condensates in adjustable complex magnetization landscapes
• Dynamically stabilized spin superfluidity in frustrated magnets
• Impact of electromagnetic fields and heat on spin transport signals in Y${}_3$Fe${}_5$O${}_{12}$
• Proposal for spin superfluid quantum interference device