2007/06/28 by G. Cao, Gang Cao, V. Durairaj +6 · 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.76.100402
arxiv created 2007/06/28 · openalex publication_date 2007/09/05 · arxiv updated 2009/12/01 · openalex created_date 2016/06/24 · openalex updated_date 2026/07/28
We report magnetic, electric transport, and calorimetric properties of single-crystal SrIrO3 as a function of temperature T and applied magnetic field H. We find that SrIrO3 is a non-Fermi-liquid metal near a ferromagnetic instability, as characterized by the following properties: (1) small saturation moment and no evidence for long-range order down to 1.7\phantom\rule0.3em0exK, (2) strongly enhanced magnetic susceptibility that diverges as T^\ensuremathγ at low temperatures with 1∕2<\ensuremathγ<1, depending on the applied field, (3) heat capacity C(T,H)\ensuremath∼\ensuremath-T\phantom\rule0.2em0exln\phantom\rule0.2em0exT that is readily enhanced in low applied fields, and (4) T3∕2 dependence of electrical resistivity over the range 1.7<T<120\phantom\rule0.3em0exK. The data imply SrIrO3 is a rare example of a stoichiometric oxide compound that exhibits non-Fermi-liquid behavior near a quantum critical point (T=0 and \ensuremathμ0H=0.23\phantom\rule0.3em0exT).