Two Distinct Charge Density Wave Orders and Emergent Superconductivity in Pressurized CuTe

Shuyang Wang; Qing Wang; Chao An; Yonghui Zhou; Ying Zhou; Xuliang Chen; Ning Hao; Zhaorong Yang

doi:10.1016/j.matt.2023.07.018

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arXiv · 2210.13896

Two Distinct Charge Density Wave Orders and Emergent Superconductivity in Pressurized CuTe

Shuyang Wang·Qing Wang·Chao An·Yonghui Zhou·Ying Zhou·Xuliang Chen·Ning Hao·Zhaorong Yang

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Abstract

The discovery of multiple charge-density-wave (CDW) orders in superconducting cuprates and Kagome CsV3Sb5 has offered a unique milieu for studying the interplay of CDW and superconductivity and altered our perspective on their nature. Here, we report a high-pressure study of quasi-one-dimensional CDW material CuTe through ultralow-temperature (400 mK) electrical transport and temperature-dependent Raman spectroscopy measurements and first-principles calculations. We provide solid evidence that the pristine CDW order (CDW1) transforms into a distinct CDW order (CDW2) at ~6.5 GPa. Calculations show that the driving force of CDW1 is due to the nesting effect and that of CDW2 probably arises from the electronic correlated interaction. Strikingly, pressure-induced superconductivity is observed with a dome-like phase diagram and its transition displays an extraordinary broadening along with the crossover from CDW1 to CDW2. These results demonstrate that pressurized CuTe provides a promising playground for understanding the intricated interplay of multiple CDWs and superconductivity.

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Shuyang Wang, Qing Wang, Chao An, Yonghui Zhou, Ying Zhou, Xuliang Chen, Ning Hao, Zhaorong Yang. 2022-10-25. Two Distinct Charge Density Wave Orders and Emergent Superconductivity in Pressurized CuTe. https://doi.org/10.1016/j.matt.2023.07.018

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