Organometallic-Inorganic Hybrid MXenes with Tunable Superconductivity

Qi Fan; Tao Bo; Wei Guo; Minghua Chen; Qing Tang; Yicong Yang; Mian Li; Ke Chen; Fangfang Ge; Jialu Li; Sicong Qiao; Changda Wang; Li Song; Lijing Yu; Jinghua Guo; Michael Naguib; Zhifang Chai; Qing Huang; Chaochao Dun; Ning Kang; Yury Gogotsi; Kun Liang

arXiv · 2502.11035

Organometallic-Inorganic Hybrid MXenes with Tunable Superconductivity

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Abstract

Ti-based two-dimensional transition-metal carbides (MXenes) have attracted attention due to their superior properties and are being explored across various applications1,2. Despite their versatile properties, superconductivity has never been demonstrated, not even predicted, for this important group of 2D materials. In this work, we have introduced an electrochemical intercalation protocol to construct versatile organometallic-inorganic hybrid MXenes and achieved tunable superconductivity in the metallocene-modified layered crystals. Through structural editing of MXene matrix at atomic scale and meticulously modulated intercalation route, Ti3C2Tx intercalated with metallocene species exhibits a superconductive transition temperature (Tc) of 10.2 K. Guest intercalation induced electron filling and strain engineering are responsible for the emerging superconductivity in this intrinsically non-superconducting material. Theoretically, simulated electron-phonon interaction effects further elucidate the nature of the changes in Tc. Furthermore, the Tc of crafted artificial superlattices beyond Ti-based MXenes have been predicted, offering a general strategy for engineering superconductivity and magnetism in layered hybrid materials.

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Qi Fan, Tao Bo, Wei Guo, Minghua Chen, Qing Tang, Yicong Yang, Mian Li, Ke Chen, Fangfang Ge, Jialu Li, Sicong Qiao, Changda Wang, Li Song, Lijing Yu, Jinghua Guo, Michael Naguib, Zhifang Chai, Qing Huang, Chaochao Dun, Ning Kang, Yury Gogotsi, Kun Liang. 2025-02-16. Organometallic-Inorganic Hybrid MXenes with Tunable Superconductivity. https://arxiv.org/abs/2502.11035

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