Magnetic-field-induced pattern of coexisting condensates in the superconducting state of CeCoIn5.
CeCoIn5 is an anomalous superconductor which exhibits a high-magnetic-field phase that consists of a modulated magnetic coupling together with persistent superconducting order. Here we use a generic microscopic model to argue that this state is a pattern of coexisting condensates: a d-wave singlet superconducting (SC) state, a staggered π-triplet SC state, and a spin density wave (SDW). Our microscopic picture allows a calculation of the phase diagram, and physical consequences including NMR. We interpret the appearance of the SDW order in the Q phase as being induced by odd-triplet pairing.
Aperis
Alexandros
A
Department of Physics, National Technical University of Athens, GR-15780 Athens, Greece.
Varelogiannis
Georgios
G
Littlewood
Peter B
PB