Strong damping of phononic heat current by magnetic excitations in SrCu_2(BO_3)_2

M. Hofmann, T. Lorenz, G. S. Uhrig +5

Measurements of the thermal conductivity as a function of temperature and magnetic field in the 2D dimer spin system SrCu${}_2$(BO${}_3$)${}_2$ are presented. In zero magnetic field the…