Microwave Response and Spin Waves in Superconducting Ferromagnets
V. Braude
TL;DR
This paper investigates how spin waves are excited in superconducting ferromagnetic slabs, analyzing surface impedance behavior near propagation thresholds to aid in studying materials with coexisting superconductivity and magnetism.
Contribution
It provides a theoretical analysis of microwave response and spin wave excitation in superconducting ferromagnets, including surface impedance behavior near thresholds.
Findings
Surface impedance behavior near propagation thresholds analyzed
Influence of magnetic induction at the surface considered
Provides basis for microwave-based investigation of superconducting ferromagnets
Abstract
Excitation of spin waves is considered in a superconducting ferromagnetic slab with the equilibrium magnetization both perpendicular and parallel to the surface. The surface impedance is calculated and its behavior near propagation thresholds is analyzed. Influence of non-zero magnetic induction at the surface is considered in various cases. The results provide a basis for investigation of materials with coexisting superconductivity and magnetism by microwave response measurements.
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