Giant oscillatory Gilbert damping in superconductor/ferromagnet/superconductor junctions.

ABSTRACT: Interfaces between materials with differently ordered phases present unique opportunities for exotic physical properties, especially the interplay between ferromagnetism and superconductivity in the ferromagnet/superconductor heterostructures. The investigation of zero- and π-junctions has been of particular interest for both fundamental physical science and emerging technologies. Here, we report the experimental observation of giant oscillatory Gilbert damping in the superconducting niobium/nickel-iron/niobium junctions with respect to the nickel-iron thickness. This observation suggests an unconventional spin pumping and relaxation via zero-energy Andreev bound states that exist not only in the niobium/nickel-iron/niobium π-junctions but also in the niobium/nickel-iron/niobium zero-junct

SUBMITTER: Yao Y 

PROVIDER: S-EPMC8626077 | biostudies-literature | 2021 Nov

REPOSITORIES: biostudies-literature