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Campuzano, J. C.; Jennings, G.; Faiz, M.; Beaulaigue, L.; Veal, B. W.; Liu, J. Z.; Paulikas, A. P.; Vandervoort, K. G.; Claus, H.; List, R. S.; Arko, A. J.; Bartlett, R. J.

doi:10.1103/physrevlett.64.2308

Cited by 361 publications

(111 citation statements)

References 35 publications

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“…In particular, we 59 find that the present pseudogap∆ PG (k) in Eq. (25) has the same doping dependence as that obtained previously from the charge-carrier self-energy in Ref. 41 , i.e., the magnitude of the pseudogap parameter∆ PG is particular large in the underdoped regime, and then it smoothly decreases upon increasing doping, in qualitative agreement with the ARPES experimental results 63 .…”

Section: A Doping Dependence Of Electron Spectrumsupporting

confidence: 89%

“…All above theoretical results are qualitatively consistent with the ARPES experimental data of cuprate superconductors [15][16][17][18][19][20][21][22][23][24][25][26][27] , and therefore show that the basic d-wave BCS formalism obtained from the kinetic energy driven SC mechanism can correctly reproduce some main features of the SC coherence of the low-energy quasiparticle excitations observed in cuprate superconductors in the SC-state.…”

Section: A Doping Dependence Of Electron Spectrumsupporting

confidence: 84%

“…Angle-resolved photoemission spectroscopy (ARPES) experiments reveal sharp spectral peaks in the singleparticle excitation spectrum 5,6,[15][16][17][18][19][20][21][22][23] , indicating the presence of quasiparticle-like states, which is also consistent with the long lifetime of the electronic state as it has been determined by the conductivity measurements 10,11 . In particular, as a direct method for probing the electron Fermi surface, the early ARPES measurements indicate that in the entire doping range, the underlying electron Fermi surface satisfies Luttinger's theorem [24][25][26][27] , i.e., the electron Fermi surface with the area is proportional to 1 − δ. Later, the ARPES experimental studies show that in the underdoped and optimally doped regimes, although the antinodal region of the electron Fermi surface is gapped out, leading to the notion that only part of the electron Fermi surface survives as the disconnected Fermi arcs around the nodes [28][29][30][31][32] , the underlying electron Fermi surface determined from the low-energy spectral weight still fulfills Luttinger's theorem in the entire doping range 32 .…”

Section: Introductionmentioning

confidence: 99%

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Electronic structure of cuprate superconductors in a full charge-spin recombination scheme

Feng

Kuang

Zhao

2015

Physica C: Superconductivity and its Applications

113

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A long-standing unsolved problem is how a microscopic theory of superconductivity in cuprate superconductors based on the charge-spin separation can produce a large electron Fermi surface. Within the framework of the kinetic-energy driven superconducting mechanism, a full charge-spin recombination scheme is developed to fully recombine a charge carrier and a localized spin into a electron, and then is employed to study the electronic structure of cuprate superconductors in the superconducting-state. In particular, it is shown that the underlying electron Fermi surface fulfills Luttinger's theorem, while the superconducting coherence of the low-energy quasiparticle excitations is qualitatively described by the standard d-wave Bardeen-Cooper-Schrieffer formalism. The theory also shows that the observed peak-dip-hump structure in the electron spectrum and Fermi arc behavior in the underdoped regime are mainly caused by the strong energy and momentum dependence of the electron self-energy.

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Section: A Doping Dependence Of Electron Spectrumsupporting

confidence: 89%

Section: A Doping Dependence Of Electron Spectrumsupporting

confidence: 84%

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Electronic structure of cuprate superconductors in a full charge-spin recombination scheme

Feng

Kuang

Zhao

2015

Physica C: Superconductivity and its Applications

113

View full text Add to dashboard Cite

show abstract

“…At the non-interacting level the change between a FS that closes around (π, π) and around (0, 0) occurs at x=0.22 for the ratio of t ′ /t used here. In addition, in Fig.2-c the experimental points for optimal doped YBCO obtained several years ago [22] are also shown.…”

Section: B Fermi Surfacementioning

confidence: 99%

Spin and charge fluctuations in theU−t−t′model

Buhler

Moreo

1999

Phys. Rev. B

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As additional neutron scattering experiments are performed on a variety of high temperature superconducting compounds it appears that magnetic incommensuration is a phenomenon common to all of the samples studied. The newest experimental results indicate that incommensurate peaks exist at momentum q = π(1, 1 ± δ) and π(1 ± δ, 1) in La2−xSrxCuO4 (LSCO) and YBa2Cu3O 7−δ (YBCO). The dependence of δ with hole doping appears to be similar in both materials. In addition, new ARPES data for LSCO as a function of doping show that its Fermi surface is qualitatively similar to the one of YBCO, contrary to what was previously believed. Early theoretical attempts to explain LSCO and YBCO behavior usually relied on one-or three-band Hubbard models or the t-J model with electron hopping beyond nearest-neighbor and with different parameter values for each material. In this paper it is shown that using a one band Hubbard U-t-t ′ model with a unique set of parameters, U/t=6 and t ′ /t=-0.25, good agreement is obtained between computational calculations and neutron scattering and ARPES experiments for LSCO and YBCO. It is also shown that using a more negative t ′ /t will induce short-range magnetic incommensuration along the diagonal direction in the Brillouin zone, in qualitative disagreement with the experimental results. At the finite temperatures of the present Monte Carlo simulation it is also observed that in this model the tendency to incommensuration appears to be more related to the shape of the two-dimensional Fermi surface and the strength of the interaction, rather than to charge order.

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“…Among many More than a decade after the initial discovery, the other experimental techniques, photoemission has exact mechanism responsible for high T superconmade a number of important contributions to these c ductivity remains a problem at the heart of conquestions. Highlights include the mapping of the densed matter physics and materials science research Fermi surface [2][3][4], the identification of d-wave [1]. Does the mechanism reflect new physics or can symmetry of the order parameter in the superconit be viewed as a variant on existing theories of ducting state [5][6][7], and the detection of a pseudogap superconductivity?…”

Section: Introductionmentioning

confidence: 99%