Spontaneous currents in superconductor/ferromagnetic devices

Zoran Radovic; Ljiljana Dobrosavljevic-Grujic; B. Vujicic

doi:10.1117/12.397826

6 September 2000 Spontaneous currents in superconductor/ferromagnetic devices

Zoran Radovic, Ljiljana Dobrosavljevic-Grujic, B. Vujicic

Proceedings Volume 4058, Superconducting and Related Oxides: Physics and Nanoengineering IV; (2000) https://doi.org/10.1117/12.397826
Event: AeroSense 2000, 2000, Orlando, FL, United States

Abstract

We study theoretically the Josephson coupling in a ferromagnetic weak link between both isotropic s-wave, and layered d-wave superconductors. For strong ferromagnetic barrier influence, the conventional coupling is obtained, with ground state phase difference across the link 0 < (phi) _gs <EQ (pi) . When the weak link is a part of a superconducting ring, this is accompanied by the flow of spontaneous supercurrent, of intensity which depends on the reduced inductance l equals 2(pi) LI_c(T)/(Phi) ₀, and is non-zero only for l greater than a critical value. For l >> 1, another consequence of the unconventional coupling is the anomalous quantization of the magnetic flux.

Citation Download Citation

Zoran Radovic, Ljiljana Dobrosavljevic-Grujic, and B. Vujicic "Spontaneous currents in superconductor/ferromagnetic devices", Proc. SPIE 4058, Superconducting and Related Oxides: Physics and Nanoengineering IV, (6 September 2000); https://doi.org/10.1117/12.397826

ACCESS THE FULL ARTICLE

INSTITUTIONAL
Select your institution to access the SPIE Digital Library.

SELECT YOUR INSTITUTION

PERSONAL
Sign in with your SPIE account to access your personal subscriptions or to use specific features such as save to my library, sign up for alerts, save searches, etc.

PERSONAL SIGN IN

No SPIE Account? Create one

PURCHASE THIS CONTENT

SUBSCRIBE TO DIGITAL LIBRARY

50 downloads per 1-year subscription

Members: $195

Non-members: $335 ADD TO CART

25 downloads per 1 - year subscription

Members: $145

Non-members: $250 ADD TO CART

PURCHASE SINGLE ARTICLE

Includes PDF, HTML & Video, when available