2005/02/28 by X. F. Sun, I. Tsukada, T. Suzuki +2 · 2 citations
Materials Science · Physics and Astronomy · #Magnetic and transport properties of perovskites and related materials #Physics of Superconductivity and Magnetism #Theoretical and Computational Physics #cond-mat.supr-con
paper · pdf · doi:10.1103/physrevb.72.104501
published as Phys. Rev. B 72, 104501 (2005) · 6 pages, 4 figures, accepted for publication in Phys. Rev. B
arxiv created 2005/07/27 · openalex publication_date 2005/09/02 · arxiv updated 2009/12/01 · openalex created_date 2016/06/24 · openalex updated_date 2026/07/28
The magnetic-field (H) dependence of the thermal conductivity \ensuremathκ of Pr1.3La0.7CuO4 is found to show a pronounced minimum for in-plane fields at low temperature, which is best attributed to the scattering of phonons by free spins that are seen by a Schottky-type specific heat and a Curie-Weiss susceptibility. Besides pointing to a strong spin-phonon coupling in cuprates, the present result demonstrates that the H dependence of the phonon heat transport should not be naively neglected when discussing the \ensuremathκ(H) behavior of cuprates, since the Schottky anomaly is ubiquitously found in cuprates at any doping.