Physics – Condensed Matter – Superconductivity
Scientific paper
2005-11-11
Phys. Rev. B 73, 214524 (2006)
Physics
Condensed Matter
Superconductivity
6 pages, 2 figures. Version 2: extended (to appear in Phys. Rev. B)
Scientific paper
10.1103/PhysRevB.73.214524
We consider the minigap in a disordered ferromagnet (F) in contact with a superconductor (S) in the situation when the magnetization of the F layer is inhomogeneous in space and noncollinear. If the magnetization is strongly inhomogeneous, it effectively averages out, and the minigap survives up to the exchange field $h_c ~ (L/a) E_{Th}$, where $L$ is the thickness of the F layer, $a$ is the scale on which the magnetization varies, and $E_{Th}$ is the Thouless energy. Technically, we use the "triplet" version of the Usadel equations including both singlet and triplet components of the Green's functions. In many cases, the effect of disordered magnetization may be effectively included in the conventional Usadel equations as the spin-flip scattering term. In the case of low-dimensional magnetic inhomogeneities (we consider spiral magnetization as an example), however, the full set of "triplet" equations must be solved.
Fominov Ya. V.
Ivanov Dmitri A.
No associations
LandOfFree
Minigap in superconductor-ferromagnet junctions with inhomogeneous magnetization 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 Minigap in superconductor-ferromagnet junctions with inhomogeneous magnetization, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Minigap in superconductor-ferromagnet junctions with inhomogeneous magnetization will most certainly appreciate the feedback.
Profile ID: LFWR-SCP-O-408651