Proposal for spin superfluid quantum interference device
arXiv:2502.00237 · doi:10.1103/j8rt-c6qp
Abstract
In easy-plane magnets, the spin superfluid phase was predicted to facilitate coherent spin transport. So far, experimental evidence remains elusive. In this Letter, we propose an indirect way to sense this effect via the spin superfluid quantum interference device (spin SQUID), inspired by its superconducting counterpart (rf SQUID). The spin SQUID is constructed as a quasi-one-dimensional (1D) magnetic ring with a single Josephson weak link, functioning as an isolated device with a microwave response. The spin current is controlled by an in-plane electric field through Dzyaloshinskii-Moriya interaction. This interaction can be interpreted as a gauge field that couples to the spin supercurrent through the Aharonov-Casher effect. By investigating the static and dynamic properties of the device, we show that the spin current and the harmonic frequencies of the spin superfluid are periodic with respect to the accumulated Aharonov-Casher phase and are, therefore, sensitive to the radial electric flux through the ring in units of an electric flux quantum, suggesting a potential electric-field sensing functionality. For readout, we propose to apply spectroscopic analysis to detect the frequency shift of the harmonic modes induced by this magnonic Stark effect.
5 pages, 4 figures. Supplemental Material includes detailed derivations
References in corpus (24)
- Spin current and magneto-electric effect in non-collinear magnets
- Spin Caloritronics
- Ferroelectricity in spiral magnets
- Probing condensed matter physics with magnetometry based on nitrogen-vacancy centres in diamond
- Theory of Spin Hall conductivity in n-doped GaAs
- Large voltage tuning of Dzyaloshinskii-Moriya Interaction: a route towards dynamic control of skyrmion chirality
- Spin currents and spin superfluidity
- Magnetization transport and quantized spin conductance
- Controlling Dzyaloshinskii-Moriya Interaction via Chirality Dependent Layer Stacking, Insulator Capping and Electric Field
- Chirality from interfacial spin-orbit coupling effects in magnetic bilayers
- Superfluid spin transport through antiferromagnetic insulators
- Superfluid Spin Transport through Easy-Plane Ferromagnetic Insulators
- Measurements of the exchange stiffness of YIG films by microwave resonance techniques
- Quantifying the Dzyaloshinskii-Moriya Interaction Induced by the Bulk Magnetic Asymmetry
- Spin Hall phenomenology of magnetic dynamics
- Ferromagnetic Materials for Josephson π Junctions
- Integration and characterization of micron-sized YIG structures with very low Gilbert damping on arbitrary substrates
- Spin transport in mesoscopic rings with inhomogeneous spin-orbit coupling
- Perspective: (Beyond) spin transport in insulators
- Investigation of the spin-1 honeycomb antiferromagnet BaNiVO with easy plane anisotropy
- Easy-Plane Magnetic Strip as a Long Josephson Junction
- Exploiting Coherence in Nonlinear Spin-Superfluid Transport
- Flux Quantization Due to Monopole and Dipole Currents
- Towards an experimental proof of the magnonic AharonovCasher effect