Strong Superexchange in a<italic> d<sup>9−δ</sup></italic> Nickelate Revealed by Resonant Inelastic X-Ray Scattering

doi:arXiv:2008.08209

	Strong Superexchange in a d^9−δ Nickelate Revealed by Resonant Inelastic X-Ray Scattering
	Q. Lin, J.1,2,3,4; Villar Arribi, P.5; Fabbris, G.1,6; S. Botana, A.7; Meyers, D.1,8; Miao, H.1,9; Shen, Y.1; G. Mazzone, D.1,10; Feng, J.11; G. Chiuzbaian, S.11,12; Nag, A.13; C. Walters, A.13; Garcia-Fernandez, M.13; Zhou, Ke-Jin 13; Pelliciari, J.14; Jarrige, I.14; W. Freeland, J.6; Zhang, Junjie 5,15; F. Mitchell, J.5; Bisogni, V.14; Liu, X.2; R. Norman, M.5; P. M. Dean, M.1; P. M. Dean, M.
	2021-01-16
状态	已发表
摘要	The discovery of superconductivity in a d9−δ nickelate has inspired disparate theoretical perspectives regarding the essential physics of this class of materials. A key issue is the magnitude of the magnetic superexchange, which relates to whether cuprate-like high-temperature nickelate superconductivity could be realized. We address this question using Ni L-edge and O K-edge spectroscopy of the reduced d9−1/3 trilayer nickelates R4Ni3O8 (where R=La,Pr) and associated theoretical modeling. A magnon energy scale of ∼ 80 meV resulting from a nearest-neighbor magnetic exchange of J = 69(4) meV is observed, proving that d9−δ nickelates can host a large superexchange. This value, along with that of the Ni-O hybridization estimated from our O K-edge data, implies that tri-layer nickelates represent an intermediate case between the infinite-layer nickelates and the cuprates. Layered nickelates thus provide a route to testing the relevance of superexchange to nickelate su-perconductivity.
DOI	arXiv:2008.08209
相关网址	查看原文
出处	Arxiv
WOS记录号	PPRN:10702047
WOS类目	Physics, Condensed Matter
资助项目	U.S. Department of Energy, Office of Science, Office of Basic Energy Sciences[
文献类型	预印本
条目标识符	https://kms.shanghaitech.edu.cn/handle/2MSLDSTB/348568
专题	物质科学与技术学院
作者单位	1.Brookhaven Natl Lab, Condensed Matter Phys & Mat Sci Dept, Upton, NY 11973, USA 2.Paul Scherrer Inst, Lab Neutron Scattering & Imaging, CH-5232 Villigen, Switzerland 3.Sorbonne Univ, CNRS, Lab Chim Phys Matiere & Rayonnement, UMR 7614, 4 Pl Jussieu, F-75252 Sorbonne, France 4.Synchrotron SOLEIL, Orme Merisiers, BP 48, F-91192 Gif-sur-yvette, France 5.Diamond Light Source, Harwell Sci & Innovat Campus, Didcot OX11 0DE, Oxfordshire, England 6.Brookhaven Natl Lab, Natl Synchrotron Light Source2, Upton, NY 11973, USA 7.Shandong Univ, Inst Crystal Mat, Jinan 250100, Shandong, Peoples R China 8.ShanghaiTech Univ, Sch Phys Sci & Technol, Shanghai 201210, Peoples R China 9.Chinese Acad Sci, Inst Phys, Beijing 100190, Peoples R China 10.Univ Chinese Acad Sci, Beijing 100049, Peoples R China 11.Argonne Natl Lab, Mat Sci Div, Lemont, IL 60439, USA 12.Argonne Natl Lab, Adv Photon Source, Lemont, IL 60439, USA 13.Arizona State Univ, Dept Phys, Tempe, AZ 85287, USA 14.Oklahoma State Univ, Dept Phys, Stillwater, OK 74078, USA 15.Oak Ridge Natl Lab, Mat Sci & Technol Div, Oak Ridge, TN 37830, USA
推荐引用方式 GB/T 7714	Q. Lin, J.,Villar Arribi, P.,Fabbris, G.,et al. Strong Superexchange in a d^9−δ Nickelate Revealed by Resonant Inelastic X-Ray Scattering. 2021.