加压三层镍酸盐 La4Ni3O10 中的超导性
超导电性
2025-04-08 v3 材料科学
摘要
镍酸盐超导体因与高温铜基超导体相似的晶体与电子结构，过去数十载备受关注。本文报道加压 Ruddlesden-Popper 相单晶 La4Ni3O10（n = 3）中的超导性，及其与相图中密度波序的关联。随压力增大，由电阻率反常所指示的密度波序渐受抑制，继而在 I4/mmm 空间群下约 25 K 处浮现超导性。磁化率测量确认了体积分数逾 80% 的体超导性。此外，理论分析揭示反铁磁（AFM）超交换相互作用可作为加压 La4Ni3O10 中超导（SC）涌现的有效配对相互作用。本研究为探究 Ruddlesden-Popper 三层钙钛矿镍酸盐中的非常规超导机制提供了新平台。
引用
@article{arxiv.2311.07423,
title = {Superconductivity in trilayer nickelate La4Ni3O10 under pressure},
author = {Mingxin Zhang and Cuiying Pei and Di Peng and Xian Du and Weixiong Hu and Yantao Cao and Qi Wang and Juefei Wu and Yidian Li and Huanyu Liu and Chenhaoping Wen and Jing Song and Yi Zhao and Changhua Li and Weizheng Cao and Shihao Zhu and Qing Zhang and Na Yu and Peihong Cheng and Lili Zhang and Zhiwei Li and Jinkui Zhao and Yulin Chen and Changqing Jin and Hanjie Guo and Congjun Wu and Fan Yang and Qiaoshi Zeng and Shichao Yan and Lexian Yang and Yanpeng Qi},
journal= {arXiv preprint arXiv:2311.07423},
year = {2025}
}
备注
21 pages, 4 figures