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题名: Fermi surface of underdoped high-T-c superconducting cuprates
作者: Dai, X ;  Su, ZB ;  Yu, L
刊名: PHYSICAL REVIEW B
出版日期: 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
学科分类: Physics
通讯作者: Dai, X , ACAD SINICA,INST THEORET PHYS,POB 2735,BEIJING 100080,PEOPLES R CHINA.
部门归属: INT CTR THEORET PHYS,I-34100 TRIESTE,ITALY
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.
收录类别: SCI
原文出处: 查看原文
内容类型: 期刊论文
URI标识: http://ir.itp.ac.cn/handle/311006/12435
Appears in Collections:理论物理所1978-2010年知识产出_期刊论文

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Recommended Citation:
Dai, X,Su, ZB,Yu, L. Fermi surface of underdoped high-T-c superconducting cuprates[J]. PHYSICAL REVIEW B,1997,56(9):5583-5589.
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