Spin Josephson effect in ferromagnet/ferromagnet tunnel junctions

Details Spin Josephson effect in ferromagnet/ferromagnet tunnel junctions Spin Josephson effect in ferromagnet/ferromagnet tunnel junctions

2003-02-26

arxiv.org/abs/cond-mat/0302528v3

Europhys. Lett. 67, 620 (2004)

Physics

Condensed Matter

Mesoscale and Nanoscale Physics

LaTex, seven pages, no figures; version to appear in Europhys. Lett.; in order to make room for a more extended microscopic an

Scientific paper

10.1209/epl/i2003-10305-x

We consider the tunnel spin current between two ferromagnetic metals from a perspective similar to the one used in superconductor/superconductor tunnel junctions. We use fundamental arguments to derive a Josephson-like spin tunnel current $I_J^{\rm spin}\propto\sin(\theta_1-\theta_2)$. Here the phases are associated with the planar contribution to the magnetization, $\sim e^{i\theta}$. The crucial step in our analysis is the fact that the $z$-component of the spin is canonically conjugate to the phase of the planar contribution: $[\theta,S^z]=i$. This is analogous to the commutation relation $[\phi,N]=i$ in superconductors, where $\phi$ is the phase associated to the superconducting order parameter and $N$ is the Cooper pair number operator. We briefly discuss the experimental consequences of our theoretical analysis.

Affiliated with

Also associated with

No associations

Rating

Spin Josephson effect in ferromagnet/ferromagnet tunnel 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 Spin Josephson effect in ferromagnet/ferromagnet tunnel junctions, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Spin Josephson effect in ferromagnet/ferromagnet tunnel junctions will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-529150