We have previously shown that a ferromagnet-superconductor heterostructure may possess a spontaneous current circulation parallel to the interface. This current is caused by Andreev bound states in the thin ferromagnetic layer, and can be fully spin-polarized. Here we investigate the total energy of the system in cases where the current either does or does not flow. We show that the current is a true quantum ground state effect, and examine the effect of the current on the different contributions to the total energy.
|Number of pages||4|
|Journal||Physica C: Superconductivity and its Applications|
|Publication status||Published - 15 May 2006|
|Event||4th International Conferene on Vortex Matter in Nanostructured Superconductors (VORTEX IV) - Iraklion, Greece|
Duration: 3 Sep 2005 → 9 Sep 2005
- proximity effect
- superconductor-ferromagnet interface