Magnon-Cooparons in magnet-superconductor hybrids
arXiv:2203.05336 · doi:10.1038/s43246-022-00321-8
Abstract
Generation and detection of spinful Cooper pairs in conventional superconductors has been intensely pursued by designing increasingly complex magnet-superconductor hybrids. Here, we demonstrate theoretically that magnons with nonzero wavenumbers universally induce a cloud of spinful triplet Cooper pairs around them in an adjacent conventional superconductor. The resulting composite quasiparticle, termed magnon-cooparon, consists of a spin flip in the magnet screened by a cloud of the spinful superfluid condensate. Thus, it inherits a large effective mass, which can be measured experimentally. Furthermore, we demonstrate that two magnetic wires deposited on a superconductor serve as a controllable magnonic directional coupler mediated by the nonlocal and composite nature of magnon-cooparons. Our analysis predicts a quasiparticle that enables generation, control, and use of spinful triplet Cooper pairs in the simplest magnet-superconductor heterostructures.
References in corpus (15)
- Superconducting proximity effect and Majorana fermions at the surface of a topological insulator
- Spin Transfer Torques
- A spin triplet supercurrent through the half-metallic ferromagnet CrO2
- Theory of magnon-driven spin Seebeck effect
- Nonlocal Thermoelectric Effects and Nonlocal Onsager Relations in a Three-Terminal Proximity-Coupled Superconductor-Ferromagnet Device
- Coherent elastic excitation of spin waves
- Magnon-Fluxon interaction in a ferromagnet/superconductor heterostructure
- Spin dynamics in a superconductor / ferromagnet proximity system
- Spin Supercurrent, Magnetization Dynamics, and Phi-State in Spin-Textured Josephson Junctions
- Microscopic theory of spin transport at the interface between the superconductor and a ferromagnetic insulator
- Magnetization dynamics in proximity-coupled superconductor/ferromagnet/superconductor multilayers
- Spin transport parameters of NbN thin films characterised by spin pumping experiments
- Superconductivity-induced change in magnetic anisotropy in epitaxial ferromagnet-superconductor hybrids with spin-orbit interaction
- Magnetization reorientation due to the superconducting transition in heavy-metal heterostructures
- Thermally induced spin torque and domain wall motion in superconductor/antiferromagnetic insulator bilayers
Cited by in corpus (12)
- Proximity effect in superconductor/antiferromagnet hybrids: Neel triplets and impurity suppression of superconductivity
- Electromagnetic Proximity Effect: Superconducting Magnonics and Beyond
- Generation of polarized spin-triplet Cooper pairings by magnetic barriers in superconducting junctions
- Magnetic eigenmodes in chains of coupled phi0-Josephson junctions with ferromagnetic weak links
- Renormalization of antiferromagnetic magnons by superconducting condensate and quasiparticles
- Magnon influence on the superconducting density of states in superconductorferromagnetic-insulator bilayers
- Ultra-strong coupling of two ferromagnets via Meissner currents
- Spin Pumping into two-dimensional systems
- Superluminal Propagation of Composite Collective Modes in Superconductor-Ferromagnet Heterostructures
- Triplet correlations in superconductor/antiferromagnet heterostructures: dependence on type of antiferromagnetic ordering
- Using superconductivity to control magnetism: a facet of superconducting spintronics
- Hybrid collective excitations in topological superconductor/ferromagnetic insulator heterostructures