Oscillatory Nernst effect in Pt|ferrite|cuprate-superconductor trilayer films.

ABSTRACT: Although magnetism and superconductivity hardly coexist in a single material, recent advances in nanotechnology and spintronics have brought to light their interplay in magnetotransport in thin-film heterostructures. Here, we found a periodic oscillation of Nernst voltage with respect to magnetic fields in Pt|LiFe₅O₈ (Pt|LFO) bilayers grown on a cuprate superconductor YBa₂Cu₃O_7-x (YBCO). At high temperatures above the superconducting transition temperature (T _C ) of YBCO, spin Seebeck voltages originating in Pt|LFO layers are observed. As temperature decreases well below T _C , the spin Seebeck voltage is suppressed and unconventional periodic voltage oscillation as a function of magnetic fields appears; such an os

SUBMITTER: Shiomi Y 

PROVIDER: S-EPMC5509755 | biostudies-literature | 2017 Jul

REPOSITORIES: biostudies-literature