Carrier-Concentration Dependence of the Pseudogap Ground State of Superconducting Bi(2)Sr2-xLaxCuO6+delta Revealed by Cu-63,Cu-65-Nuclear Magnetic Resonance in Very High Magnetic Fields

CORC > 物理研究所 > 物理所公开发表论文 > 期刊论文

	Carrier-Concentration Dependence of the Pseudogap Ground State of Superconducting Bi(2)Sr2-xLaxCuO6+delta Revealed by Cu-63,Cu-65-Nuclear Magnetic Resonance in Very High Magnetic Fields
	Kawasaki, S ; Lin, CT ; Kuhns, PL ; Reyes, AP ; Zheng, GQ
刊名	PHYSICAL REVIEW LETTERS
	2010
卷号	105 期号:13
关键词	T-C SUPERCONDUCTOR FERMI-SURFACE O SYSTEM VORTEX ARCS NMR
ISSN号	0031-9007
通讯作者	Kawasaki, S: Okayama Univ, Dept Phys, Okayama 7008530, Japan.
中文摘要	We report the results of the Knight shift by Cu-63,Cu-65-NMR measurements on single-layered copper-oxide Bi2Sr2-xLaxCuO6+delta conducted under very high magnetic fields up to 44 T. The magnetic field suppresses superconductivity completely, and the pseudogap ground state is revealed. The Cu-63-NMR Knight shift shows that there remains a finite density of states at the Fermi level in the zero-temperature limit, which indicates that the pseudogap ground state is a metallic state with a finite volume of Fermi surface. The residual density of states in the pseudogap ground state decreases with decreasing doping (increasing x) but remains quite large even at the vicinity of the magnetically ordered phase of x >= 0.8, which suggests that the density of states plunges to zero upon approaching the Mott insulating phase.
收录类别	SCI
资助信息	MEXT [17072005, 21102514, 22103004]; JSPS [20244058]; NSF, the State of Florida; DOE
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/311004/34494]
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	Kawasaki, S,Lin, CT,Kuhns, PL,et al. Carrier-Concentration Dependence of the Pseudogap Ground State of Superconducting Bi(2)Sr2-xLaxCuO6+delta Revealed by Cu-63,Cu-65-Nuclear Magnetic Resonance in Very High Magnetic Fields[J]. PHYSICAL REVIEW LETTERS,2010,105(13).
APA	Kawasaki, S,Lin, CT,Kuhns, PL,Reyes, AP,&Zheng, GQ.(2010).Carrier-Concentration Dependence of the Pseudogap Ground State of Superconducting Bi(2)Sr2-xLaxCuO6+delta Revealed by Cu-63,Cu-65-Nuclear Magnetic Resonance in Very High Magnetic Fields.PHYSICAL REVIEW LETTERS,105(13).
MLA	Kawasaki, S,et al."Carrier-Concentration Dependence of the Pseudogap Ground State of Superconducting Bi(2)Sr2-xLaxCuO6+delta Revealed by Cu-63,Cu-65-Nuclear Magnetic Resonance in Very High Magnetic Fields".PHYSICAL REVIEW LETTERS 105.13(2010).