Coexistence of tunneling magnetoresistance and Josephson effects in SFIFS junctions

Vavra, O. and Soni, R. and Petraru, A. and Himmel, N. and Vavra, I. and Fabian, J. and Kohlstedt, H. and Strunk, Ch. (2017) Coexistence of tunneling magnetoresistance and Josephson effects in SFIFS junctions. AIP ADVANCES, 7 (2): 025008. ISSN 2158-3226,

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Abstract

We demonstrate an integration of tunneling magnetoresistance and the Josephson effects within one tunneling junction. Several sets of Nb-Fe-Al-Al2O3-Fe-Nb wafers with varying Al and Fe layers thickness were prepared to systematically explore the competition of TMR and Josephson effects. A coexistence of the critical current I-C(d(Fe)) and the tunneling magnetoresistance ratio TMR(d(Fe)) is observed for iron layer dFe thickness range 1.9 and 2.9 nm. Further optimization such as thinner Al2O3 layer leads to an enhancement of the critical current and thus to an extension of the coexistence regime up to d(Fe) similar or equal to 3.9 nm Fe. (C) 2017 Author(s).

Item Type: Article
Uncontrolled Keywords: FERROMAGNET;
Subjects: 500 Science > 530 Physics
Divisions: Physics > Institute of Theroretical Physics > Chair Professor Richter > Group Jaroslav Fabian
Physics > Institute of Experimental and Applied Physics > Chair Professor Weiss > Group Christoph Strunk
Depositing User: Dr. Gernot Deinzer
Date Deposited: 14 Dec 2018 13:01
Last Modified: 26 Feb 2019 13:13
URI: https://pred.uni-regensburg.de/id/eprint/421

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