Magnetic eigenmodes in chains of coupled phi0-Josephson junctions with ferromagnetic weak links

Abstract

A coupled chain of superconductor/ferromagnet/superconductor (S/F/S) with anomalous ground phase shift phi_0 represents a system realizing long-range interaction between magnetic moments of the weak links. The interaction is of magnetoelectric origin and is mediated by the condensate phase of superconductors. The system is a paradigmic platform for investigation of collective magnetic states governed by the superconducting phase. Here we study the magnetic eigenmodes of such a system and demonstrate that the eigenfrequencies are determined by the magnetic configuration of the whole system and are controlled by the superconducting phase. Depending on the orientation of the magnetic easy axis the eigenmodes can be very different ranging from individual oscillations of different magnets to highly-cooperative behavior.

arXiv admin note: text overlap with arXiv:2310.16543

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Cited by in corpus (5)

• Electromagnetic Proximity Effect: Superconducting Magnonics and Beyond
• Voltage-driven dynamics of ${\phi }_0$-S/F/S Josephson junctions chains
• Anomalous phase shift and superconducting diode effect in Josephson junctions via thin films of rare-earth intermetallic magnets
• Originality of resonance and locking phenomena in SFS ${\phi }_0$ Josephson junction
• Hybrid collective excitations in topological superconductor/ferromagnetic insulator heterostructures