2001/03/20 by A. V. Sologubenko, K. Giannò, K. Gianno +3 · 3 citations
Chemistry · Physics and Astronomy · #Advanced Condensed Matter Physics #Antiferromagnetism #Chemistry #Condensed matter physics #Cuprate #Lattice (music) #Materials science #Physics #Physics of Superconductivity and Magnetism #Quantum many-body systems #Spin (aerodynamics) #Spinon #Superconductivity #Thermal conductivity #Thermodynamics #cond-mat.mtrl-sci #cond-mat.str-el
paper · pdf · doi:10.1103/physrevb.64.054412
published as Phys. Rev. B 64, 054412 (2001) · 12 pages (RevTeX), 8 figures
arxiv created 2001/03/20 · openalex publication_date 2001/07/06 · arxiv updated 2009/11/30 · openalex created_date 2016/06/24 · openalex updated_date 2026/08/05
We present the results of measurements of the thermal conductivity of the quasi-one-dimensional S=1/2 spin-chain compound SrCuO2 in the temperature range between 0.4 and 300 K along the directions parallel and perpendicular to the chains. An anomalously enhanced thermal conductivity is observed along the chains above about 40 K. The analysis of the present data and a comparison with analogous recent results for Sr2CuO3 and other similar materials demonstrates that this behavior is generic for cuprates with copper-oxygen chains and strong intrachain interactions. The observed anomalies are attributed to the one-dimensional energy transport by spin excitations (spinons), limited by the interaction between spin and lattice excitations. The energy transport along the spin chains has a nondiffusive character, in agreement with theoretical predictions for integrable models.