期刊
JOURNAL OF PHYSICS AND CHEMISTRY OF SOLIDS
卷 63, 期 12, 页码 2225-2231出版社
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/S0022-3697(02)00248-2
关键词
metal-insulator transition; projection operator; High-T(c) cuprate superconductors
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-T(c) cuprates. Electronic spectra show a remarkable similarity to numerical results. (C) 2002 Elsevier Science Ltd. All rights reserved.
作者
我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。
推荐
暂无数据