Josephson effect in S$_{\rm F}$XS$_{\rm F}$ junctions

Details Josephson effect in S$_{\rm F}$XS$_{\rm F}$ junctions Josephson effect in S$_{\rm F}$XS$_{\rm F}$ junctions

2002-05-15

arxiv.org/abs/cond-mat/0205316v1

JETP Letters, Vol. 75(12), 2002, p. 646 [Pisma v Zhurnal Eksperimentalnoi i Teoreticheskoi Fiziki, Vol. 75(12), 2002, p. 772]

Physics

Condensed Matter

Mesoscale and Nanoscale Physics

5 pages, 5 figures

Scientific paper

10.1134/1.1503330

We investigate the Josephson effect in S$_{\rm F}$XS$_{\rm F}$ junctions, where S$_{\rm F}$ is a superconducting material with a ferromagnetic exchange field, and X a weak link. The critical current $I_c$ increases with the (antiparallel) exchange fields if the distribution of transmission eigenvalues of the X-layer has its maximum weight at small values. This exchange field enhancement of the supercurrent does not exist if X is a diffusive normal metal. At low temperatures, there is a correspondence between the critical current in an S$_{\rm F}$IS$_{\rm F}$ junction with collinear orientations of the two exchange fields, and the AC supercurrent amplitude in an SIS tunnel junction. The difference of the exchange fields $h_1-h_2$ in an S$_{\rm F}$IS$_{\rm F}$ junction corresponds to the potential difference $V_1-V_2$ in an SIS junction; i.e., the singularity in $I_c$ [in an S$_{\rm F}$IS$_{\rm F}$ junction] at $|h_1-h_2|=\Delta_1+\Delta_2$ is the analogue of the Riedel peak. We also discuss the AC Josephson effect in S$_{\rm F}$IS$_{\rm F}$ junctions.

Affiliated with

Also associated with

No associations

Rating

Josephson effect in S$_{\rm F}$XS$_{\rm F}$ junctions does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.

If you have personal experience with Josephson effect in S$_{\rm F}$XS$_{\rm F}$ junctions, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Josephson effect in S$_{\rm F}$XS$_{\rm F}$ junctions will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-489126