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Geometrical spin-frustrated systems play an important role in condensed matter physics. Recently, a proposed charge-density-wave (CDW) along with superconductivity (SC) in CuIr₂Te₄ was reported [1] through the resistivity and magnetization measurements. It motivated us to further study the competitions between CDW and SC under external hydrostatic pressure. The CuIr₂Te₄ was synthesized by the solid-state reaction method and characterized using X-ray diffraction (XRD) and magnetization measurements. XRD pattern confirmed the major phase of CuIr₂Te₄ and the anomalous transition (T_s ~ 200 K) along with SC transition below T_c ~ 3 K in zero-field-cooling cycle was observed. The preliminary results are in agreement with the previous report [1]. Under the external pressure, both transitions (T_s and T_c) exhibit a systematic change, suggesting that a significant competition between anomalous transition and SC occurs in CuIr₂Te₄. The nature of anomalous transition in CuIr₂Te₄ will be discussed.

Reference:
[1] Dong Yan et al., CuIr₂Te₄: A Quasi-Two-Dimensional Ternary Telluride Chalcogenide Superconductor, arXiv:1908.05438.