Journal ArticleDOI
Exact-diagonalization study of the effective model for holes in the planar antiferromagnet.
TLDR
Pair-binding-energy and hole-density correlation functions indicate that two holes bind for moderate exchange interactions, even in the case of the extreme anisotropic-Ising limit.Abstract:
The effective single-band Hamiltonian for holes in the two-dimensional quantum antiferromagnet, relevant for the ${\mathrm{CuO}}_{2}$ layers in copper-oxide superconductors, is studied by the exact diagonalization of a finite-size system with 16 cells. Single- and two-hole ground-state properties are calculated. Pair-binding-energy and hole-density correlation functions indicate that two holes bind for moderate exchange interactions, even in the case of the extreme anisotropic-Ising limit.read more
Citations
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Journal ArticleDOI
The t–J model for the oxide high-Tc superconductors
Masao Ogata,Hidetoshi Fukuyama +1 more
TL;DR: In this article, a theoretical review is given on high temperature superconductivity in copper oxides (cuprates) by focusing on hole doping cases based on the view that it is realized in carrier doped Mott insulators, as noted by Anderson in the initial stage.
Journal ArticleDOI
Magnetic correlations in high temperature superconductivity
Arno P. Kampf,Arno P. Kampf +1 more
TL;DR: In this article, the authors review results of basic experiments which probe the magnetic correlations in the CuO2 planes and give an overview of current phenomenological and microscopic approaches in the context of purely electronic Hubbard type models focusing on the role of AF spin fluctuations.
Journal ArticleDOI
The spin-polaron theory of high-Tc superconductivity
TL;DR: In this paper, a model for high-temperature superconductors which assumes that the carriers are holes in the (hybridized) oxygen 2p band and form "spin polarons" with the moments on the copper atoms is presented.
Journal ArticleDOI
Evolution of Magnetic and Superconducting Fluctuations with Doping of High-Tc Superconductors
TL;DR: In this paper, electron-hole excitations were studied as a function of temperature, extent of hole doping, and energy of the incident photons in Bi2Sr2CaCu2O8±δsuperconductors.
Journal ArticleDOI
The in-plane electrodynamics of the superconductivity in Bi2Sr2CaCu2O8+d: energy scales and spectral weight distribution
Andrés F. Santander-Syro,Ricardo P. S. M. Lobo,N. Bontemps,W. Lopera,D. Giratá,Zorica Konstantinović,Z. Z. Li,Helene Raffy +7 more
TL;DR: In this article, the transfer of spectral weight from finite energy into the superfluid as the system becomes superconducting was studied and the authors derived the optical conductivity of Bi2Sr2CaCu2O8+� (Bi-2212) thin films.