Vortex sheet on the A-B interface in 3He

The A and B phases are separated by an A-B interface. We have studied the case that there are vortices in the A phase, but not in the B phase. The A and B phases are phase coherent, so that vortices cannot terminate at the interface. Instead, they are deflected and form a surface vortex sheet on the A-B interface. We have calculated the bending of the vorticity and the structure of the surface sheet. The results are consistent with experimental findings.

Vortex sheets of different structure exist in bulk 3He-A.


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11.8.2003, Erkki Thuneberg, Email