Dynamic Magnetoelectric Effect in Ferromagnet-Superconductor Tunnel Junctions
arXiv:1304.5750 · doi:10.1103/PhysRevLett.111.087602
Abstract
We study the magnetization dynamics in a ferromagnet-insulator-superconductor tunnel junction and the associated buildup of the electrical polarization. We show that for an open circuit, the induced voltage varies strongly and nonmonotonically with the precessional frequency, and can be enhanced significantly by the superconducting correlations. For frequencies much smaller or much larger than the superconducting gap, the voltage drops to zero, while when these two energy scales are comparable, the voltage is peaked at a value determined by the driving frequency. We comment on the potential utilization of the effect for the low-temperature spatially-resolved spectroscopy of magnetic dynamics.
4.2 pages, 4 figures
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- Josephson effect through magnetic skyrmion
- Superconductivity provides a giant enhancement to the spin battery effect
- Out-of-Equilibrium Spin Transport in Mesoscopic Superconductors
- Non-linear spin torque, pumping and cooling in superconductor/ferromagnet systems
- Giant magnetoelectric effect in magnetic tunnel junctions coupled to an electromagnetic environment