Fermi surface of underdoped high-T-c superconducting cuprates

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	Fermi surface of underdoped high-T-c superconducting cuprates
	Dai, X; Su, ZB; Yu, L; Dai, X , ACAD SINICA,INST THEORET PHYS,POB 2735,BEIJING 100080,PEOPLES R CHINA.
刊名	PHYSICAL REVIEW B
	1997
卷号	56 期号:9 页码:5583-5589
关键词	Normal-state j Model Flux Phases Electronic-structure Spin Dynamics Hubbard-model bi2sr2cacu2o8+delta La2-xsrxcuo4 Relaxation Evolution
ISSN号	0163-1829
英文摘要	The coexistence of a pi-flux stare and a d-wave resonant-valance-bond (RVB) state is considered in this paper within the slave-boson approach. A critical value of doping-concentration delta(c) is found, below which the coexisting pi-flux and d-wave RVB state is favored in energy. The pseudo-Fermi surface of spinons and the physical electron spectral function are calculated. A clear Fermi-level crossing is found along the (0,0) to (pi, pi) direction, but no such crossing is detected along the (pi, 0) to (pi, pi) direction. Also, an energy gap of d-wave symmetry appears at the Fermi level in our calculation. The above results are in agreement with the angle-resolved photoemission experiments which indicate at a d-wave pseudogap and a half-pocket-like Fermi surface in underdoped cuprates.
学科主题	Physics
URL标识	查看原文
公开日期	2012-08-29
内容类型	期刊论文
源URL	[http://ir.itp.ac.cn/handle/311006/12435]
专题	理论物理研究所_理论物理所1978-2010年知识产出
通讯作者	Dai, X , ACAD SINICA,INST THEORET PHYS,POB 2735,BEIJING 100080,PEOPLES R CHINA.
推荐引用方式 GB/T 7714	Dai, X,Su, ZB,Yu, L,et al. Fermi surface of underdoped high-T-c superconducting cuprates[J]. PHYSICAL REVIEW B,1997,56(9):5583-5589.
APA	Dai, X,Su, ZB,Yu, L,&Dai, X , ACAD SINICA,INST THEORET PHYS,POB 2735,BEIJING 100080,PEOPLES R CHINA..(1997).Fermi surface of underdoped high-T-c superconducting cuprates.PHYSICAL REVIEW B,56(9),5583-5589.
MLA	Dai, X,et al."Fermi surface of underdoped high-T-c superconducting cuprates".PHYSICAL REVIEW B 56.9(1997):5583-5589.