Competition between heavy fermion and Kondo interaction in isoelectronic A-site-ordered perovskites

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	Competition between heavy fermion and Kondo interaction in isoelectronic A-site-ordered perovskites
	Meyers, D ; Middey, S ; Cheng, JG ; Mukherjee, S ; Gray, BA ; Cao, YW ; Zhou, JS ; Goodenough, JB ; Choi, YS ; Haskel, D ; Freeland, JW ; Saha-Dasgupta, T ; Chakhalian, J
刊名	NATURE COMMUNICATIONS
	2014
卷号	5
ISSN号	2041-1723
通讯作者	Meyers, D (reprint author), Univ Arkansas, Dept Phys, Fayetteville, AR 72701 USA.
中文摘要	With current research efforts shifting towards the 4d and 5d transition metal oxides, understanding the evolution of the electronic and magnetic structure as one moves away from 3d materials is of critical importance. Here we perform X-ray spectroscopy and electronic structure calculations on A-site-ordered perovskites with Cu in the A-site and the B-sites descending along the ninth group of the periodic table to elucidate the emerging properties as d-orbitals change from partially filled 3d to 4d to 5d. The results show that when descending from Co to Ir, the charge transfers from the cuprate-like Zhang-Rice state on Cu to the t(2g) orbital of the B site. As the Cu d-orbital occupation approaches the Cu2+ limit, a mixed valence state in CaCu3Rh4O12 and heavy fermion state in CaCu3Ir4O12 are obtained. The investigated d-electron compounds are mapped onto the Doniach phase diagram of the competing RKKY and Kondo interactions developed for the f-electron systems.
资助信息	DOD-ARO [0402-17291]; NSF [DMR-1122603]; CSIR; DST, India; US Department of Energy, Office of Science [DEAC02-06CH11357]; NSFC; MOST [11304371, 2014CB921500]; Strategic Priority Research Program of the Chinese Academy of Sciences [XDB07000000]
语种	英语
公开日期	2015-04-14
内容类型	期刊论文
源URL	[http://ir.iphy.ac.cn/handle/311004/59374]
专题	物理研究所_物理所公开发表论文_物理所公开发表论文_期刊论文
推荐引用方式 GB/T 7714	Meyers, D,Middey, S,Cheng, JG,et al. Competition between heavy fermion and Kondo interaction in isoelectronic A-site-ordered perovskites[J]. NATURE COMMUNICATIONS,2014,5.
APA	Meyers, D.,Middey, S.,Cheng, JG.,Mukherjee, S.,Gray, BA.,...&Chakhalian, J.(2014).Competition between heavy fermion and Kondo interaction in isoelectronic A-site-ordered perovskites.NATURE COMMUNICATIONS,5.
MLA	Meyers, D,et al."Competition between heavy fermion and Kondo interaction in isoelectronic A-site-ordered perovskites".NATURE COMMUNICATIONS 5(2014).