TY - JOUR
T1 - Operator projection theory for electron differentiation in underdoped cuprate superconductors
AU - Onoda, Shigeki
AU - Imada, Masatoshi
N1 - Funding Information:
We thank F.F. Assaad for valuable discussions and providing results of Monte-Carlo calculations. The work was supported by the Japan Society for the Promotion of Science under grant number JSPS-RFTF97P01103.
Copyright:
Copyright 2004 Elsevier Science B.V., Amsterdam. All rights reserved.
PY - 2002/12
Y1 - 2002/12
N2 - Metals approaching the Mott insulator generate a new hierarchy in the electronic structure accompanied by an electron differentiation with emergence of strongly momentum dependent structure, beyond the Mott-Hubbard, Brinkman-Rice and Slater pictures of the Mott transition. To consider such nonlinear phenomenon, we develop an analytic nonperturbative theory based on operator projections combined with a self-consistent treatment of the low-energy excitations. This reproduces the Hubbard bands, Mott gap, spin fluctuations, mass divergence, diverging charge compressibility, and strongly renormalized flat and damped dispersion similar to angle-resolved photoemission data in high-Tc cuprates. Electronic spectra show a remarkable similarity to numerical results.
AB - Metals approaching the Mott insulator generate a new hierarchy in the electronic structure accompanied by an electron differentiation with emergence of strongly momentum dependent structure, beyond the Mott-Hubbard, Brinkman-Rice and Slater pictures of the Mott transition. To consider such nonlinear phenomenon, we develop an analytic nonperturbative theory based on operator projections combined with a self-consistent treatment of the low-energy excitations. This reproduces the Hubbard bands, Mott gap, spin fluctuations, mass divergence, diverging charge compressibility, and strongly renormalized flat and damped dispersion similar to angle-resolved photoemission data in high-Tc cuprates. Electronic spectra show a remarkable similarity to numerical results.
KW - High-T cuprate superconductors
KW - Metal-insulator transition
KW - Projection operator
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U2 - 10.1016/S0022-3697(02)00248-2
DO - 10.1016/S0022-3697(02)00248-2
M3 - Conference article
AN - SCOPUS:0036903075
SN - 0022-3697
VL - 63
SP - 2225
EP - 2231
JO - Journal of Physics and Chemistry of Solids
JF - Journal of Physics and Chemistry of Solids
IS - 12
T2 - SNS 2001
Y2 - 13 May 2001 through 17 May 2002
ER -