The effect of quasinesting and a magnon mode on the antiferromagnetic vector for the optical conductivity of a doped two-dimensional antiferromagnet

2002 ◽  
Vol 94 (1) ◽  
pp. 135-148
Author(s):  
S. A. Gordyunin ◽  
A. M. Belemouk ◽  
A. E. Karakozov ◽  
A. F. Barabanov
Keyword(s):  
Optical Conductivity ◽  
Two Dimensional ◽  
Antiferromagnetic Vector

scholarly journals Strong anisotropic optical conductivity in two-dimensional puckered structures: The role of the Rashba effect

2017 ◽  
Vol 96 (7) ◽  
Author(s):  
S. Saberi-Pouya ◽  
T. Vazifehshenas ◽  
T. Salavati-fard ◽  
M. Farmanbar ◽  
F. M. Peeters
Keyword(s):  
Optical Conductivity ◽  
Two Dimensional ◽  
Rashba Effect

Optical conductivity for the two-dimensional systems of strongly correlated electrons

2001 ◽  
Vol 364-365 ◽  
pp. 197-201
Author(s):  
Jae-Hyeon Eom ◽  
Sung-Sik Lee ◽  
Ki-Seok Kim ◽  
Sung-Ho Suck Salk
Keyword(s):  
Optical Conductivity ◽  
Strongly Correlated Electrons ◽  
Correlated Electrons ◽  
Strongly Correlated ◽  
Two Dimensional

SINGLE-PARTICLE AND OPTICAL EXCITATIONS IN DOPED MOTT- HUBBARD INSULATORS

1992 ◽  
Vol 06 (05n06) ◽  
pp. 589-602 ◽  
Author(s):  
WALTER STEPHAN ◽  
PETER HORSCH
Keyword(s):  
Optical Properties ◽  
Band Structure ◽  
Fermi Surface ◽  
Copper Oxide ◽  
Hubbard Model ◽  
Optical Conductivity ◽  
Single Particle ◽  
Oxide Superconductors ◽  
Two Dimensional ◽  
Copper Oxide Superconductors

Recent numerical results for the single-particle spectral function and optical conductivity of the two-dimensional Hubbard and t−J models are reviewed. Already for two holes in systems of sixteen to twenty sites (≥ 10% doping) a large electronic Fermi surface, compatible with Luttinger’s theorem, is observed. The full single-particle Green’s function is examined, and is shown to exhibit quasiparticle-like behavior, with dispersion consistent with the band structure of the non-interacting limit, and band width scaling approximately as J for J smaller than t. The optical conductivity of the Hubbard and t−J models is shown to have many features in common with recent experiments on copper oxide superconductors. The importance of the often neglected 3-site terms which arise in the derivation of the t−J model from the Hubbard model for optical properties is discussed.

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