Cobalt-Dimer Nitrides: A Potential Novel Family of High-Temperature Superconductors

doi:10.1088/0256-307X/39/9/097401

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	Cobalt-Dimer Nitrides: A Potential Novel Family of High-Temperature Superconductors
	Gu, Yuhao 4; Jiang, Kun 1,4; Wu, Xianxin 5; Hu, Jiangping 3,4
刊名	CHINESE PHYSICS LETTERS
	2022
卷号	39 期号:9 页码:97401
关键词	WAVE
ISSN号	0256-307X
DOI	10.1088/0256-307X/39/9/097401
英文摘要	We predict that the square lattice layer formed by [Co2N2](2-) diamond-like units can host high-temperature superconductivity. The layer appears in the stable ternary cobalt nitride, BaCo2N2. The electronic physics of the material stems from Co2N2 layers where the dimerized Co pairs form a square lattice. The low energy physics near Fermi energy can be described by an effective two-orbital model. Without considering interlayer couplings, the two orbitals are effectively decoupled. This electronic structure satisfies the gene character proposed for unconventional high-temperature superconductors. We predict that the leading superconducting pairing instability is driven from an extended s-wave (s (+/-)) to a d-wave by hole doping, e.g., in Ba1-x K x Co2N2. This study provides a new platform to establish the superconducting mechanism of unconventional high-temperature superconductivity.
学科主题	Physics
语种	英语
内容类型	期刊论文
源URL	[http://ir.itp.ac.cn/handle/311006/27697]
专题	理论物理研究所_理论物理所1978-2010年知识产出
作者单位	1.Chinese Acad Sci, Inst Phys, Beijing 100190, Peoples R China 2.Univ Chinese Acad Sci, Kavli Inst Theoret Sci, Beijing 100190, Peoples R China 3.Chinese Acad Sci, Inst Theoret Phys, Beijing 100190, Peoples R China 4.Chinese Acad Sci, Beijing Natl Lab Condensed Matter Phys, Beijing 100190, Peoples R China 5.Univ Chinese Acad Sci, Sch Phys Sci, Beijing 100190, Peoples R China
推荐引用方式 GB/T 7714	Gu, Yuhao,Jiang, Kun,Wu, Xianxin,et al. Cobalt-Dimer Nitrides: A Potential Novel Family of High-Temperature Superconductors[J]. CHINESE PHYSICS LETTERS,2022,39(9):97401.
APA	Gu, Yuhao,Jiang, Kun,Wu, Xianxin,&Hu, Jiangping.(2022).Cobalt-Dimer Nitrides: A Potential Novel Family of High-Temperature Superconductors.CHINESE PHYSICS LETTERS,39(9),97401.
MLA	Gu, Yuhao,et al."Cobalt-Dimer Nitrides: A Potential Novel Family of High-Temperature Superconductors".CHINESE PHYSICS LETTERS 39.9(2022):97401.