20 research outputs found
Role of d-wave pairing in superconductors
We argue that the recent Raman spectroscopy observation of a sharp mode in
s-wave superconducting VSi is due to a competing d-wave pairing state. We
present microscopic arguments for the origin of this d-wave order. We further
argue that the d-wave order explains the observed shrinking of the vortex core
structure at anomalously low magnetic fields and the large anisotropy observed
in the upper critical field