Evidence for easy-plane XY ferromagnetism in heavy-fermion quantum-critical CeRh6Ge4

Riku Yamamoto, Sejun Park, Zachary W. Riedel +6

We report ${}^{73}$Ge nuclear quadrupole resonance (NQR) and magnetic resonance (NMR) spectroscopy in the heavy-fermion quantum-critical ferromagnet CeRh${}_6$Ge${}_4$. NQR and NMR spect…