Electronic structure of the new Ni-based superconductor KNi2Se2

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	Electronic structure of the new Ni-based superconductor KNi2Se2
	Lu, F ; Zhao, JZ ; Wang, WH
刊名	JOURNAL OF PHYSICS-CONDENSED MATTER
	2012
卷号	24 期号:49
关键词	INSULATOR
ISSN号	0953-8984
通讯作者	Lu, F: Chinese Acad Sci, Beijing Natl Lab Condensed Matter Phys, Beijing 100190, Peoples R China.
中文摘要	The electronic structure of the newly discovered superconductor KNi2Se2 is studied by first-principles calculations. Our results show that its ground state is a quasi-two-dimensional metal and the Fermi surface is contributed by the Ni 3d and Se 4p states. These states determine the significant physical properties of the heavy-fermion superconductor KNi2Se2, such as the heavy-fermion behavior and low superconducting transition temperature. Based on the multi-orbital character of our calculation, we suggest that KNi2Se2 may have a complicated superconducting multi-gap structure. The influence of the Coulomb interaction on the electronic structure and the 3d orbital character in this material is also investigated.
收录类别	SCI
资助信息	NSFC of China [11047162, 11104148, 50902072]; Tianjin Key Technology RD Program [11ZCKFGX0130]; Young Teachers Foundation Project from the Doctoral Fund of the Ministry of Education of China [20100031120035]; Fundamental Research Funds for the Central Universities
语种	英语
公开日期	2013-09-17
内容类型	期刊论文
源URL	[http://ir.iphy.ac.cn/handle/311004/37192]
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	Lu, F,Zhao, JZ,Wang, WH. Electronic structure of the new Ni-based superconductor KNi2Se2[J]. JOURNAL OF PHYSICS-CONDENSED MATTER,2012,24(49).
APA	Lu, F,Zhao, JZ,&Wang, WH.(2012).Electronic structure of the new Ni-based superconductor KNi2Se2.JOURNAL OF PHYSICS-CONDENSED MATTER,24(49).
MLA	Lu, F,et al."Electronic structure of the new Ni-based superconductor KNi2Se2".JOURNAL OF PHYSICS-CONDENSED MATTER 24.49(2012).