Comment on "Low-temperature phonon thermal conductivity of single-crystalline Nd_{2}CuO_{4}: Effects of sample size and surface roughness" by Li et al.

Abstract

In this Comment, we show that the experimental data reported by Li {\it et al.} (Phys. Rev. B {\bf 77}, 134501 (2008)) do not support the phonon specular reflection at low temperatures for high-T_c cuprates, because the phonon mean free path \ell calculated from their thermal conductivity data is much smaller than the averaged sample width above \sim 100 mK for both Nd_{2}CuO_{4} and YBa_{2}Cu_{3}O_{6.0} single crystals.

arXiv comment4 pages, 2 figures, accepted for publication in Phys. Rev. B

References in corpus (8)

• Universal Heat Conduction in YBa_2Cu_3O_6.9
• Specific-heat evidence for strong electron correlations in the thermoelectric material (Na,Ca)Co_{2}O_{4}
• Low-temperature phonon thermal conductivity of cuprate single crystals
• Electronic specific heat and low energy quasiparticle excitations in superconducting state of $L{a}_{2-x}S{r}_{x}Cu{O}_4$ single crystals
• Ballistic magnon transport and phonon scattering in the antiferromagnet Nd${}_2$CuO${}_4$
• Electronic Inhomogeneity and Breakdown of the Universal Thermal Conductivity in Cuprate Superconductors
• Transport in Ultraclean YBa${}_2$Cu${}_3$O${}_7$: neither Unitary nor Born Impurity Scattering
• Depression of quasiparticle density of states at zero energy in La1.9Sr0.1Cu1-xZnxO4

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• Low-temperature heat transport of spin-gapped quantum magnets
• Low-temperature heat transport of Nd_{2-x}Ce_{x}CuO_{4} single crystals
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• 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