Pressure-tunable superconductivity on cage-like compound Y5Rh6Sn18

IF 5.8 2区材料科学 Q2 CHEMISTRY, PHYSICAL

Journal of Alloys and Compounds Pub Date : 2024-11-29 DOI:10.1016/j.jallcom.2024.177846

Chao Xiong, Cuiying Pei, Qi Wang, Yi Zhao, Yuyang Jiang, Changhua Li, Weizheng Cao, Lili Zhang, Juefei Wu, Yanpeng Qi

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引用次数: 0

Abstract

In this work, we report the pressure-dependent evolution of superconductivity in cage-like compound Y₅Rh₆Sn₁₈ by combining electrical transport measurements, synchrotron x-ray diffraction (XRD) and theoretical computation. The application of external pressure leads to the enhancement of metallic nature in Y₅Rh₆Sn₁₈. There is a noted pressure-tunable superconducting temperature (T_c), which climbs to 3.70 K at 7.4 GPa, and then reverses to 2.37 K at the higher pressure of 30.6 GPa. High-pressure XRD analysis confirm the robustness of Y₅Rh₆Sn₁₈, which exhibits stability without transitioning into other structural phases up to approximately 30 GPa. The ab initio calculations show a significant contribution of Sn s and p electrons as well as Rh and Y d electrons to the total density of states (DOS) near the Fermi level, which supports the multi-band superconductivity of this compound. The enhancement of T_c in Y₅Rh₆Sn₁₈ could be explained by the strengthening of Sn-Sn bonds and the redistribution of Sn atoms in partial density of states (PDOS).

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来源期刊

Journal of Alloys and Compounds 工程技术-材料科学：综合

CiteScore

11.10

自引率

14.50%

发文量

5146

审稿时长

67 days

期刊介绍： The Journal of Alloys and Compounds is intended to serve as an international medium for the publication of work on solid materials comprising compounds as well as alloys. Its great strength lies in the diversity of discipline which it encompasses, drawing together results from materials science, solid-state chemistry and physics.