2008/01/05 by X. F. Sun, A. A. Taskin, X. Zhao +3 · 1 citation
Materials Science · Physics and Astronomy · #Advanced Condensed Matter Physics #Magnetic and transport properties of perovskites and related materials #Multiferroics and related materials #cond-mat.str-el
paper · pdf · doi:10.1103/physrevb.77.054436
published as Phys. Rev. B 77, 054436 (2008) · 5 pages, 5 figures, accepted for publication in Phys. Rev. B
arxiv created 2008/01/05 · openalex publication_date 2008/02/27 · arxiv updated 2009/12/01 · openalex created_date 2016/06/24 · openalex updated_date 2026/07/28
To study the effects of paramagnetic spins on phonons, both the in-plane and the c-axis heat transport of GdBaCo2O5+x single crystals are measured at low temperature down to 0.36\phantom\rule0.3em0exK and in magnetic field up to 16\phantom\rule0.3em0exT. It is found that the phonon heat transport is very strongly affected by the magnetic field and nearly five times increase of the thermal conductivity in several tesla field is observed at 0.36\phantom\rule0.3em0exK. It appears that phonons are resonantly scattered by paramagnetic spins in zero field and the application of magnetic field removes such strong scattering, but the detailed mechanism is to be elucidated.