Low-temperature phonon thermal conductivity of cuprate single crystals

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

The effect of sample size and surface roughness on the phonon thermal conductivity ${\kappa }_p$ of Nd${}_2$CuO${}_4$ single crystals was studied down to 50 mK. At 0.5 K, ${\kappa }_p$ is proportional…