NMR in a Superconducting Vortex – N J Curro NMR Group.

Local magnetic field in a vortex lattice.

Recently postdoc Igor Vinograd published his work on the nematic superconductor FeSe. NMR offers a powerful site-selective approach to “see” inside vortices to probe the NMR spin lattice relaxation rate in the region of the superconductor where the magnetic field penetrates. This work revealed that unlike other unconventional superconductors, there are no antiferromagnetic fluctuations that emerge in spatial regions where the superconductivity is suppressed. This work was done in collaboration with new faculty member, Valentin Taufour, and his students. Undergraduate students Sarah Edwards and Journey Byland also contributed to this work.