Transport, magnetic, thermodynamic, and optical properties in Ti-doped Sr2RuO4

Article

关键词: TRIPLET SUPERCONDUCTOR SR2RUO4;    SPIN FLUCTUATIONS;    STATE;    TRANSITION;    HEAT;    PEROVSKITE;    SYMMETRY;    CRYSTAL;    SPECTRA;    CA2RUO4;   

DOI  :  10.1103/PhysRevB.65.104523

来源: SCIE

【 摘 要 】

We report on electrical resistivity, magnetic susceptibility, and magnetization on heat-capacity and optical experiments in single crystals of Sr2Ru1-xTixO4. Samples with x=0.1 and 0.2 reveal purely semiconducting resistivity behavior along c and the charge transport is close to localization within the ab plane. A strong anisotropy in the magnetic susceptibility appears at temperatures below 100 K. Moreover magnetic ordering in the c direction with a moment of order 0.01 mu(B)/f.u. occurs at low temperatures. On doping the low-temperature linear term of the heat capacity becomes significantly reduced and probably is dominated by spin fluctuations. Finally, the optical conductivity reveals the anisotropic character of the dc resistance, with the in-plane conductance roughly following a Drude-type behavior and an insulating response along c.

【 授权许可】

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