TY - JOUR
T1 - Non-Fermi-liquid behavior in nearly ferromagnetic SrIrO3 single crystals
AU - Cao, G.
AU - Durairaj, V.
AU - Chikara, S.
AU - DeLong, L. E.
AU - Parkin, S.
AU - Schlottmann, P.
N1 - Copyright:
Copyright 2007 Elsevier B.V., All rights reserved.
PY - 2007/9/5
Y1 - 2007/9/5
N2 - 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 K, (2) strongly enhanced magnetic susceptibility that diverges as Tγ at low temperatures with 1 2<γ<1, depending on the applied field, (3) heat capacity C(T,H)∼-T ln T that is readily enhanced in low applied fields, and (4) T32 dependence of electrical resistivity over the range 1.7<T<120 K. 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 μ0 H=0.23 T).
AB - 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 K, (2) strongly enhanced magnetic susceptibility that diverges as Tγ at low temperatures with 1 2<γ<1, depending on the applied field, (3) heat capacity C(T,H)∼-T ln T that is readily enhanced in low applied fields, and (4) T32 dependence of electrical resistivity over the range 1.7<T<120 K. 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 μ0 H=0.23 T).
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U2 - 10.1103/PhysRevB.76.100402
DO - 10.1103/PhysRevB.76.100402
M3 - Article
AN - SCOPUS:34548557422
SN - 1098-0121
VL - 76
JO - Physical Review B - Condensed Matter and Materials Physics
JF - Physical Review B - Condensed Matter and Materials Physics
IS - 10
M1 - 100402
ER -