Anisotropic transport and magnetic properties and magnetic-field tuned states of CeZn11 single crystals

Article

关键词: LOW-TEMPERATURE PROPERTIES;    THERMOPOWER;    HEAT;    ELECTRON;    SYSTEM;    ZN;   

DOI  :  10.1103/PhysRevB.88.054410

来源: SCIE

【 摘 要 】

We present detailed temperature- and field-dependent data obtained from magnetization, resistivity, heat capacity, Hall resistivity and thermoelectric power measurements performed on single crystals of CeZn11. The compound orders antiferromagnetically at similar to 2 K. The zero-field resistivity and thermoelectric power data show features characteristic of a Ce-based intermetallic with crystal-electric-field splitting and possible Kondo lattice effects. We constructed the T-H phase diagram for the magnetic field applied along the easy [110] direction, which shows that the magnetic field required to suppress T-N below 0.4 K is in the range of 45-47.5 kOe. A linear behavior of the rho(T) data, H parallel to [110], was observed only for H = 45 kOe for 0.46 K <= T <= 1.96 K followed by the Landau-Fermi-liquid regime for a limited range of fields 47.5 kOe <= H <= 60 kOe. From the analysis of our data, it appears that CeZn11 is a local moment compound with little or no electronic correlations arising from the Ce 4f shell. The thermoelectric and transport properties of CeZn11 are mostly governed by the crystal-electric-field effects. Given the very high quality of our single crystals, quantum oscillations are found for both CeZn11 and its nonmagnetic analog LaZn11.

【 授权许可】

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