Reply to "Comment on `Low-temperature phonon thermal conductivity of single-crystalline Nd${}_2$CuO${}_4$: Effects of sample size and surface roughness' " by Sun et al

S. Y. Li, J. -B. Bonnemaison, A. Payeur +4

In their comment \cite{Sun} on our study of phonon heat transport in Nd${}_2$CuO${}_4$ \cite{Li}, Sun and Ando estimate that the phonon mean free path at low temperature is roughly hal…