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Magnetic and transport properties of low-carrier-density Kondo semimetal CeSbTe
Baijiang Lv1, Jian Chen2, Lei Qiao1
1Zhejiang Province Key Laboratory of Quantum Technology and Device, Department of Physics, Zhejiang University, Hangzhou 310027, People's Republic of China.
Abstract:
Single crystals of CeSbTe with a ZrSiS-type structure were synthesized using vapor transport method. The stoichiometry is deviated from the nominal composition, which may cause some disorder in this compound. The physical properties were characterized by measuring the magnetic susceptibility, electrical resistivity, Hall resistivity and specific heat. One antiferromagnetic (AFM) transition related to Ce3+ ions was found at [Formula: see text] K, and a field-induced metamagnetic transition was observed below [Formula: see text]. The moderately enhanced Sommerfeld coefficient [Formula: see text] mJ mol-1 · K-2 and the estimated Kondo temperature [Formula: see text] K, indicate that CeSbTe is a moderately correlated AFM Kondo lattice compound with crystalline electric field effect. The carrier concentration of CeSbTe derived from the Hall coefficient is in the order of 1021 cm-3, lower than most Kondo metals, which indicates that CeSbTe is a low-carrier-density Kondo semimetal.
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