Microscopic Magnetism of Nickel-Based Infinite-Layer Superconducting Parent Compounds RNiO2(R=La,Nd):A μSR Study

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外文摘要：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 RNiO2(R=La,Nd).In either compound,the zero-field μSR spectra down to the lowest measured temperature reveal no long-range magnetic order.In LaNiO2,short-range spin correlations appear below T=150 K,and spins fully freeze below T～10 K.NdNiO2 exhibits a more complex spin dynamics driven by the Nd 4f and Ni 3d electron spin fluctuations.Further,it shows features suggesting the proximity to a spin-glass state occurring below T=5K.In both compounds,the spin behavior with temperature is further confirmed by longitudinal-field μSR measurements.These results provide new insight into the magnetism of the parent compounds of the superconducting nickelates,crucial to understanding the microscopic origin of their superconductivity.

作者：

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

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作者单位：

State Key Laboratory of Surface Physics,Department of Physics,Fudan University,Shanghai 200438,China

Department of Physics,Southern University of Science and Technology,Shenzhen 518055,China

Shenzhen Institute for Quantum Science and Engineering,and Department of Physics,Southern University of Science and Technology,Shenzhen 518055,China

Laboratory for Muon-Spin Spectroscopy,Paul Scherrer Institute,CH-5232 Villigen PSI,Switzerland

Laboratorium für Festkörperphysik,ETH Zürich,CH-8093 Zürich,Switzerland

ISIS Facility,STFC Rutherford Appleton Laboratory,Chilton,Didcot,Oxfordshire,OX11 0QX,United Kingdom

Shanghai Research Center for Quantum Sciences,Shanghai 201315,China

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基金：

National Key Research and Development Program of ChinaNational Natural Science Foundation of ChinaShenzhen Fundamental Research ProgramShenzhen Fundamental Research Programstaff of the ISISPSI

项目编号：

2022YFA140220312174065JCYJ20220818100405013JCYJ20230807093204010RB 2010302

出版年：

2024

DOI：

10.1088/0256-307X/41/9/097502

中国物理快报(英文版)

中国科学院物理研究所,中国物理学会

中国物理快报(英文版)

CSTPCDEI

影响因子：0.515

ISSN：0256-307X

年,卷(期)：2024.41(9)