Proximity effects across oxide-interfaces of superconductor-insulator-ferromagnet hybrid heterostructure.

ABSTRACT: A case study of electron tunneling or charge-transfer-driven orbital ordering in superconductor (SC)-ferromagnet (FM) interfaces has been conducted in heteroepitaxial YBa₂Cu₃O₇(YBCO)/La_0.67Sr_0.33MnO₃(LSMO) multilayers interleaved with and without an insulating SrTiO₃(STO) layer between YBCO and LSMO. X-ray magnetic circular dichroism experiments revealed anti-parallel alignment of Mn magnetic moments and induced Cu magnetic moments in a YBCO/LSMO multilayer. As compared to an isolated LSMO layer, the YBCO/LSMO multilayer displayed a (50%) weaker Mn magnetic signal, which is related to the usual proximity effect. It was a surprise that a similar proximity effect was also observed in a YBCO/STO/LSMO multilayer, howe

SUBMITTER: Prajapat CL 

PROVIDER: S-EPMC5829237 | biostudies-literature | 2018 Feb

REPOSITORIES: biostudies-literature