Superconductivity and Charge Density Wave in Iodine-Doped CuIr<subscript>2</subscript>Te<subscript>4</subscript>.
In: Chinese Physics Letters, Jg. 38 (2021-03-01), Heft 3, S. 1-12
academicJournal
Zugriff:
We report a systematic investigation on the evolution of the structural and physical properties, including the charge density wave (CDW) and superconductivity of the polycrystalline CuIr2Te4−xIx for 0.0 ≤ x ≤ 1.0. X-ray diffraction results indicate that both of a and c lattice parameters increase linearly when 0.0 ≤ x ≤ 1.0. The resistivity measurements indicate that the CDW is destabilized with slight x but reappears at x ≥ 0.9 with very high TCDW. Meanwhile, the superconducting transition temperature Tc enhances as x increases and reaches a maximum value of around 2.95 K for the optimal composition CuIr2Te1.9I0.1 followed by a slight decrease with higher iodine doping content. The specific heat jump (ΔC/γTc) for the optimal composition CuIr2Te3.9I0.1 is approximately 1.46, which is close to the Bardeen–Cooper–Schrieffer value of 1.43, indicating that it is a bulk superconductor. The results of thermodynamic heat capacity measurements under different magnetic fields [Cp(T, H)], magnetization M(T, H) and magneto-transport ρ(T, H) measurements further suggest that CuIr2Te4−xIx bulks are type-II superconductors. Finally, an electronic phase diagram for this CuIr2Te4−xIx system has been constructed. The present study provides a suitable material platform for further investigation of the interplay of the CDW and superconductivity. [ABSTRACT FROM AUTHOR]
Titel: |
Superconductivity and Charge Density Wave in Iodine-Doped CuIr<subscript>2</subscript>Te<subscript>4</subscript>.
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Autor/in / Beteiligte Person: | Boubeche, Mebrouka ; Yu, Jia ; Chushan, Li ; Huichao, Wang ; Zeng, Lingyong ; He, Yiyi ; Wang, Xiaopeng ; Su, Wanzhen ; Wang, Meng ; Yao, Dao-Xin ; Wang, Zhijun ; Luo, Huixia |
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Zeitschrift: | Chinese Physics Letters, Jg. 38 (2021-03-01), Heft 3, S. 1-12 |
Veröffentlichung: | 2021 |
Medientyp: | academicJournal |
ISSN: | 0256-307X (print) |
DOI: | 10.1088/0256-307X/38/3/037401 |
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