Physics – Condensed Matter – Superconductivity
Scientific paper
2003-07-16
Phys. Rev. B 69, 014517 (2004)
Physics
Condensed Matter
Superconductivity
12 pages, 10 Figures
Scientific paper
10.1103/PhysRevB.69.014517
We investigate clean mutilayered structures of the SFS and SFSFS type, (where the S layer is intrinsically superconducting and the F layer is ferromagnetic) through numerical solution of the self-consistent Bogoliubov-de Gennes equations for these systems. We obtain results for the pair amplitude, the local density of states, and the local magnetic moment. We find that as a function of the thickness $d_F$ of the magnetic layers separating adjacent superconductors, the ground state energy varies periodically between two stable states. The first state is an ordinary "0-state", in which the order parameter has a phase difference of zero between consecutive S layers, and the second is a "$\pi$-state", where the sign alternates, corresponding to a phase difference of $\pi$ between adjacent S layers. This behavior can be understood from simple arguments. The density of states and the local magnetic moment reflect also this periodicity.
Halterman Klaus
Valls Oriol T.
No associations
LandOfFree
Layered ferromagnet-superconductor structures: the $π$ state and proximity effects 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 Layered ferromagnet-superconductor structures: the $π$ state and proximity effects, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Layered ferromagnet-superconductor structures: the $π$ state and proximity effects will most certainly appreciate the feedback.
Profile ID: LFWR-SCP-O-206895