Operator projection theory for electron differentiation in underdoped cuprate superconductors

Shigeki Onoda, Masatoshi Imada*

*この研究の対応する著者

研究成果: Conference article査読

6 被引用数 (Scopus)

抄録

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.

本文言語English
ページ(範囲)2225-2231
ページ数7
ジャーナルJournal of Physics and Chemistry of Solids
63
12
DOI
出版ステータスPublished - 2002 12
外部発表はい
イベントSNS 2001 - Chicago, IL, United States
継続期間: 2001 5 132002 5 17

ASJC Scopus subject areas

  • 化学 (全般)
  • 材料科学(全般)
  • 凝縮系物理学

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