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

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2013-08-01
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Hodovanets, H.
Bud’ko, Sergey
Lin, X.
Taufour, Valentin
Kim, M. G.
Pratt, D. K.
Kreyssig, Andreas
Canfield, Paul
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Ames National LaboratoryPhysics and Astronomy
Abstract

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 ∼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 TN below 0.4 K is in the range of 45–47.5 kOe. A linear behavior of the ρ(T) data, H∥ [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.

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This article is published as Hodovanets, H., S. L. Bud'ko, X. Lin, V. Taufour, M. G. Kim, D. K. Pratt, A. Kreyssig, and P. C. Canfield. "Anisotropic transport and magnetic properties and magnetic-field tuned states of CeZn 11 single crystals." Physical Review B 88, no. 5 (2013): 054410. DOI: 10.1103/PhysRevB.88.054410. Posted with permission.

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Tue Jan 01 00:00:00 UTC 2013
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