Superconductivity in quasi-one-dimensional antiferromagnetic CrNbSe5 microwires under high pressure

IF 17.3 1区材料科学 Q1 MATERIALS SCIENCE, MULTIDISCIPLINARY

Matter Pub Date : 2025-07-22 DOI:10.1016/j.matt.2025.102299

Chen Li, Yiming Wang, Chengyu Li, Ke Liu, Jiajia Feng, Haoming Cheng, En Chen, Dequan Jiang, Qiaoxin Zhang, Ting Wen, Binbin Yue, Wenge Yang, Yonggang Wang

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Abstract

Exploring potential superconductivity in magnetic compounds stands as a pivotal and challenging frontier issue. Low-dimensional materials, with their distinctive quantum confinement effects, provide an unparalleled platform for probing such quantum phenomena. Here, we present the discovery of pressure-induced superconductivity in novel antiferromagnetic CrNbSe₅ microwires with a distinctive quasi-one-dimensional structure. Under compression, CrNbSe₅ exhibits superconductivity at 15.0 GPa accompanied by carrier-type switching. The superconducting transition temperature reaches a maximum of 6.0 K at 34.2 GPa. Detailed structural analyses and theoretical calculations corroborate the quantum effects arising from Lifshitz transitions. Additionally, phonon softening and enhanced interchain interactions facilitate pressure-induced superconductivity. These findings offer critical insights into the mechanisms underlying pressure-induced superconductivity and its interplay with structural and electronic instabilities, accelerating the discovery of exotic quantum phenomena in low-dimensional van der Waals magnetic materials.

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高压下准一维反铁磁CrNbSe5微线的超导性

探索磁性化合物的潜在超导性是一个关键而具有挑战性的前沿问题。低维材料具有独特的量子约束效应，为探索此类量子现象提供了无与伦比的平台。在这里，我们在具有独特的准一维结构的新型反铁磁CrNbSe5微线中发现了压力诱导超导性。压缩条件下，CrNbSe5表现出15.0 GPa的超导性，并伴有载流子型开关。在34.2 GPa时超导转变温度最高达到6.0 K。详细的结构分析和理论计算证实了由利夫希茨跃迁引起的量子效应。此外，声子软化和增强的链间相互作用促进了压力诱导的超导性。这些发现为压力诱导超导的机制及其与结构和电子不稳定性的相互作用提供了重要的见解，加速了低维范德华磁性材料中奇异量子现象的发现。

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来源期刊

Matter MATERIALS SCIENCE, MULTIDISCIPLINARY-

CiteScore

26.30

自引率

2.60%

发文量

367

期刊介绍： Matter, a monthly journal affiliated with Cell, spans the broad field of materials science from nano to macro levels,covering fundamentals to applications. Embracing groundbreaking technologies,it includes full-length research articles,reviews, perspectives,previews, opinions, personnel stories, and general editorial content. Matter aims to be the primary resource for researchers in academia and industry, inspiring the next generation of materials scientists.