Spin dynamics and disorder effects in the S=1/2 kagome Heisenberg spin liquid phase of kapellasite

E. Kermarrec, A. Zorko, F. Bert +10

We report ${}^{35}$Cl NMR, ESR, $\mu$SR and specific heat measurements on the $S=1/2$ frustrated kagomé magnet kapellasite, $\alpha -$Cu${}_3$Zn(OH)${}_6$Cl${}_2$, where a gapless spin liquid phas…