Microscopic Magnetism of Nickel-Based Infinite-Layer Superconducting Parent Compounds RNiO_(2)(R=La,Nd):A μSR Study

作     者：Qiong Wu Ying Fu Le Wang Xuefeng Zhou Shanmin Wang Zihao Zhu Kaiwen Chen Chengyu Jiang Toni Shiroka Adrian D.Hillier Jia-Wei Mei Lei Shu 吴琼;付盈;王乐;周雪峰;王善民;朱子浩;陈锴文;姜程予;Toni Shiroka;Adrian D.Hillier;梅佳伟;殳蕾

作者机构：State Key Laboratory of Surface PhysicsDepartment of PhysicsFudan UniversityShanghai 200438China Department of PhysicsSouthern University of Science and TechnologyShenzhen 518055China Shenzhen Institute for Quantum Science and Engineeringand Department of PhysicsSouthern University of Science and TechnologyShenzhen 518055China Laboratory for Muon-Spin SpectroscopyPaul Scherrer InstituteCH-5232 Villigen PSISwitzerland Laboratorium fur FestkorperphysikETH ZurichCH-8093 ZurichSwitzerland ISIS FacilitySTFC Rutherford Appleton LaboratoryChiltonDidcotOxfordshireOX110QXUnited Kingdom Shanghai Research Center for Quantum SciencesShanghai 201315China 

出 版 物：《Chinese Physics Letters》 (中国物理快报（英文版）)

年 卷 期：2024年第41卷第9期

页      面：133-139页

核心收录：

学科分类：07[理学] 070205[理学-凝聚态物理] 0702[理学-物理学] 

基　　金：supported by the National Key Research and Development Program of China(Grant No.2022YFA1402203) the National Natural Science Foundation of China(Grant No.12174065) supported by the Shenzhen Fundamental Research Program(Grant Nos.JCYJ20220818100405013 and JCYJ20230807093204010) 

主　　题：order nickel relaxation 

摘      要：By using muon spin relaxation(μSR)measurements,we perform a comparative study of the microscopic magnetism in the parent compounds of infinite-layer nickelate superconductors RNiO_(2)(R=La,Nd).In either compound,the zero-fieldμSR spectra down to the lowest measured temperature reveal no long-range magnetic *** LaNiO_(2),short-range spin correlations appear below T=150 K,and spins fully freeze below T∼10 ***_(2)exhibits a more complex spin dynamics driven by the Nd 4f and Ni3d electron spin ***,it shows features suggesting the proximity to a spin-glass state occurring below T=5 *** both compounds,the spin behavior with temperature is further confirmed by longitudinal-field μSR *** results provide new insight into the magnetism of the parent compounds of the superconducting nickelates,crucial to understanding the microscopic origin of their superconductivity.