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Resistance and Susceptibility Anomalies in IrTe2 and CuIr2Te4

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Abstract

IrTe 2 has the CdI 2 structure and CuIr 2 Te 4 has a defect-NiAs structure at room temperature. Both compounds show basically metallic behavior. Magnetic and resistance anomalies, showing a hysteresis in temperature, have been found in IrTe 2 and CuIr 2 Te 4 . On heating, the resistivity ρ exhibits a hump-shaped maximum around 270 and 250 K for IrTe 2 and CuIr 2 Te 4 , respectively. The magnetic susceptibility χ reveals a step-like anomaly which gives evidence of a difference in the value of the Pauli paramagnetism between the high- and low temperature sides, corresponding to the anomalous behavior in ρ. These anomalies of ρ and χ in IrTe 2 originate from a gradual structure deformation with temperature, where the crystal symmetry changes from high temperature trigonal \(P\overline 3 m1\) to low temperature monoclinic C2/m.

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Matsumoto, N., Taniguchi, K., Endoh, R. et al. Resistance and Susceptibility Anomalies in IrTe2 and CuIr2Te4 . Journal of Low Temperature Physics 117, 1129–1133 (1999). https://doi.org/10.1023/A:1022546928480

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  • DOI: https://doi.org/10.1023/A:1022546928480

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