Evidence for ferromagnetic spin-pairing superconductivity in UGe${}_2$: A ${}^{73}$Ge-NQR study under pressure

A. Harada, S. Kawasaki, H. Mukuda +7

We report that a novel type of superconducting order parameter has been realized in the ferromagnetic states in UGe${}_2$ via ${}^{73}$Ge nuclear-quadrupole-resonance (NQR) experiments…