|
Pis'ma v Zhurnal Èksperimental'noi i Teoreticheskoi Fiziki, 2001, Volume 74, Issue 6, Pages 357–361
(Mi jetpl4216)
|
|
|
|
This article is cited in 70 scientific papers (total in 70 papers)
CONDENSED MATTER
$\pi-0$ transition in superconductor-ferromagnetic-superconductor junctions
N. M. Chtchelkacheva, W. Belzigb, Y. V. Nazarovc, C. Bruderb a L. D. Landau Institute for Theoretical Physics, Russian Academy of Sciences
b Departement Physik und Astronomie, Universität Basel
c Department of Applied Physics and Delft Institute of Microelectronics and Submicrontechnology, Delft University of Technology
Abstract:
Superconductor-ferromagnetic-superconductor (SFS) Josephson junctions are known to exhibit a transition between $\pi$ and $0$ states. In this note we find the $\pi-0$ phase diagram of an SFS junction depending on the transparency of an intermediate insulating layer (I). We show that in general, the Josephson critical current is nonzero at the $\pi-0$ transition temperature. Contributions to the current from the two spin channels nearly compensate each other and the first harmonic of the Josephson current as a function of phase difference is suppressed. However, higher harmonics give a nonzero contribution to the supercurrent.
Received: 10.08.2001
Citation:
N. M. Chtchelkachev, W. Belzig, Y. V. Nazarov, C. Bruder, “$\pi-0$ transition in superconductor-ferromagnetic-superconductor junctions”, Pis'ma v Zh. Èksper. Teoret. Fiz., 74:6 (2001), 357–361; JETP Letters, 74:6 (2001), 323–327
Linking options:
https://www.mathnet.ru/eng/jetpl4216 https://www.mathnet.ru/eng/jetpl/v74/i6/p357
|
Statistics & downloads: |
Abstract page: | 150 | Full-text PDF : | 72 | References: | 1 |
|