Type-1.5 superconducting state from an intrinsic proximity effect in two-band superconductors.
We show that in multiband superconductors, even an extremely small interband proximity effect can lead to a qualitative change in the interaction potential between superconducting vortices by producing long-range intervortex attraction. This type of vortex interaction results in an unusual response to low magnetic fields leading to phase separation into domains of two-component Meissner states and vortex droplets.
Babaev
Egor
E
Department of Theoretical Physics, The Royal Institute of Technology, Stockholm, SE-10691 Sweden.
Carlström
Johan
J
Speight
Martin
M