Continuum excitation and pseudospin wave in quantum spin-liquid and quadrupole ordered states of Tb${}_{2+x}$Ti${}_{2-x}$O${}_{7+y}$

Hiroaki Kadowaki, Mika Wakita, Björn Fåk +5

The ground states of the frustrated pyrochlore oxide Tb${}_{2+x}$Ti${}_{2-x}$O${}_{7+y}$ have been studied by inelastic neutron scattering experiments. Three single-crystal samples are i…