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Pseudo spin-valve switch based on ferromagnet/superconductor/ferromagnet trilayer microbridge

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arxiv 2009.00498 v1 pith:KHST3XT7 submitted 2020-09-01 cond-mat.supr-con

L.N. Karelina , V.V. Bol'ginov , Sh.A. Erkenov , S.V. Egorov , I.A. Golovchanskiy , V.I. Chichkov , A. ben Hamida , V.V. Ryazanov This is my paper · ORCID
classification cond-mat.supr-con
keywords ferromagneteffectmagneticmicrobridgespdfesuperconductorswitchable
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A noticeable magnetoresistive effect has been observed on ferromagnet/superconductor/ferromagnet (FSF) microbridges based on diluted ferromagnetic PdFe alloy containing as small as 1% magnetic atoms. Microstructuring of the FSF trilayers does not destroy the effect: the most pronounced curves were obtained on the smallest bridges of 6-8 um wide and 10-15 um long. Below the superconducting transition we are able to control the critical current of microbridges by switching between P and AP orientations of magnetizations of PdFe layers. The operation of FSF-bridge as a magnetic switch is demonstrated in several regimes providing significant voltage discrimination between digital states or remarkably low bit error rate.

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