Using the quasiclassical theory, we analyze the vortex structure of strong-paramagnetic superconductors.There, induced paramagnetic moments are accumulated exclusively around the vortex core. We quantitatively evaluate the significant paramagnetic effect in the H-dependence of various quantities, such as low temperature specific heat, Knight shift, magnetization and the flux line lattice (FLL) form factor. The anomalous H-dependence of the FLL form factor observed by the small angle neutron scattering in CeCoIn_5 is attributable to the large paramagnetic contribution.
@article{arxiv.0708.0072,
title = {Vortex states in superconductors with strong Pauli-paramagnetic effect},
author = {Masanori Ichioka and Kazushige Machida},
journal= {arXiv preprint arXiv:0708.0072},
year = {2013}
}