Hole-doping evolution of the quasiparticle band in models of strongly correlated electrons for the high-T-c cuprates

被引:40
作者
Duffy, D
Nazarenko, A
Haas, S
Moreo, A
Riera, J
Dagotto, E
机构
[1] FLORIDA STATE UNIV, NATL HIGH MAGNET FIELD LAB, TALLAHASSEE, FL 32306 USA
[2] BOSTON COLL, DEPT PHYS, CHESTNUT HILL, MA 02167 USA
[3] ETH ZURICH, CH-8093 ZURICH, SWITZERLAND
[4] INST FIS, RA-2000 ROSARIO, SANTA FE, ARGENTINA
关键词
D O I
10.1103/PhysRevB.56.5597
中图分类号
T [工业技术];
学科分类号
08 ;
摘要
Quantum Monte Carlo (QMC) and maximum-entropy techniques are used to study the spectral function a(p,omega) of the one-band Hubbard model with strong coupling including a next-nearest-neighbor electronic hopping with amplitude t'/t=-0.35. These values of parameters are chosen to improve the comparison of the Hubbard model with angle-resolved photoemission (ARPES) data for Sr2CuO2Cl2. A narrow quasiparticle (qp) band is observed in the QMC analysis at the temperature of the simulation T=t/3, both at and away from half-filling. Such a narrow band produces a large accumulation of weight in the density of states at the top of the valence band. As the electronic density [n] decreases further away from half-filling, the chemical potential travels through this energy window with a large number of states, and by [n]similar to 0.70 it has crossed it entirely. The region near momentum (0,pi) and(pi,0) in the spectral function is more sensitive to doping than momenta along the diagonal from (0,0) to (pi,pi). The evolution with hole density of the quasiparticle dispersion contains some of the features observed in recent ARPES data in the underdoped regime. For sufficiently large hole densities the ''flat'' bands at (pi,0) cross the Fermi energy, a prediction that could be tested with ARPES techniques applied to overdoped cuprates. The population of the qp band introduces a hidden density in the system which produces interesting consequences when the quasiparticles are assumed to interact through antiferromagnetic fluctuations and studied with the BCS gap-equation formalism. In particular, a region of extended s-wave character is found to compete with the d wave in the overdoped regime, i.e., when the chemical potential has almost entirely crossed the qp band as [n] is reduced. The present study also shows that previous ''real-space'' pairing theories for the cuprates, such as the antiferromagnetic Van Hove scenario, originally constructed based on information gathered at half-filling, do not change their predictions if hole dispersions resembling noninteracting electrons with renormalized parameters are used.
引用
收藏
页码:5597 / 5609
页数:13
相关论文
共 65 条
  • [41] MIXED S-WAVE AND D-WAVE SUPERCONDUCTIVITY IN HIGH-TC SYSTEMS
    LI, QP
    KOLTENBAH, BEC
    JOYNT, R
    [J]. PHYSICAL REVIEW B, 1993, 48 (01): : 437 - 455
  • [42] ELECTRONIC SPECIFIC-HEAT OF YBA2CU3O6+X FROM 1.8 TO 300-K
    LORAM, JW
    MIRZA, KA
    COOPER, JR
    LIANG, WY
    [J]. PHYSICAL REVIEW LETTERS, 1993, 71 (11) : 1740 - 1743
  • [43] OBSERVATION OF A VANHOVE SINGULARITY IN BI2SR2CACU2O8+X WITH ANGLE-RESOLVED PHOTOEMISSION
    MA, J
    QUITMANN, C
    KELLEY, RJ
    ALMERAS, P
    BERGER, H
    MARGARITONDO, G
    ONELLION, M
    [J]. PHYSICAL REVIEW B, 1995, 51 (06): : 3832 - 3839
  • [44] TEMPERATURE-DEPENDENCE OF THE SUPERCONDUCTING GAP ANISOTROPY IN BI2SR2CACU2O8+X
    MA, J
    QUITMANN, C
    KELLEY, RJ
    BERGER, H
    MARGARITONDO, G
    ONELLION, M
    [J]. SCIENCE, 1995, 267 (5199) : 862 - 865
  • [45] STRUCTURAL PHASE-TRANSITIONS AND SUPERCONDUCTIVITY IN LA2-XAXCUO4, A = SR, BA
    MARKIEWICZ, RS
    [J]. JOURNAL OF PHYSICS-CONDENSED MATTER, 1990, 2 (28) : 6223 - 6226
  • [46] Unconventional electronic structure evolution with hole doping in Bi2Sr2CaCu2O8+delta: Angle-resolved photoemission results
    Marshall, DS
    Dessau, DS
    Loeser, AG
    Park, CH
    Matsuura, AY
    Eckstein, JN
    Bozovic, I
    Fournier, P
    Kapitulnik, A
    Spicer, WE
    Shen, ZX
    [J]. PHYSICAL REVIEW LETTERS, 1996, 76 (25) : 4841 - 4844
  • [47] SUPERCONDUCTIVITY IN NARROW-BAND SYSTEMS WITH LOCAL NONRETARDED ATTRACTIVE INTERACTIONS
    MICNAS, R
    RANNINGER, J
    ROBASZKIEWICZ, S
    [J]. REVIEWS OF MODERN PHYSICS, 1990, 62 (01) : 113 - 171
  • [48] QUASI-PARTICLE DISPERSION OF THE T-J AND HUBBARD MODELS
    MOREO, A
    HAAS, S
    SANDVIK, AW
    DAGOTTO, E
    [J]. PHYSICAL REVIEW B, 1995, 51 (17) : 12045 - 12048
  • [49] PHOTOEMISSION SPECTRA OF SR2CUO2CL2 - A THEORETICAL-ANALYSIS
    NAZARENKO, A
    VOS, KJE
    HAAS, S
    DAGOTTO, E
    GOODING, RJ
    [J]. PHYSICAL REVIEW B, 1995, 51 (13) : 8676 - 8679
  • [50] SPECTRAL PROPERTIES OF THE ONE-DIMENSIONAL HUBBARD-MODEL
    PREUSS, R
    MURAMATSU, A
    VONDERLINDEN, W
    DIETERICH, P
    ASSAAD, FF
    HANKE, W
    [J]. PHYSICAL REVIEW LETTERS, 1994, 73 (05) : 732 - 735