Short-range spin correlations and induced local spin-singlet amplitude in the Hubbard model

Abstract

In this paper, from the microscopic Hubbard Hamiltonian we extract the local spin-singlet amplitude due to short-range spin correlations, and quantify its strength near half-filling. As a first application of the present approach, we study a problem of the energy dispersion and its d-wave modulation in the insulating cuprates, Sr${}_2$CuO${}_2$Cl${}_2$ and Ca${}_2$CuO${}_2$Cl${}_2$. Without any adjustable parameters, most puzzling issues are naturally and quantitatively explained within the present approach.

6 pages, 3 figures

References in corpus (4)

• The pseudogap in high-temperature superconductors: an experimental survey
• Renormalization group analysis of the 2D Hubbard model
• Mean-field study of the interplay between antiferromagnetism and d-wave superconductivity
• Interrelation of Superconducting and Antiferromagnetic Gaps in High-Tc Compounds: a Test Case for the SO(5) Theory

Cited by in corpus (2)

• Induced local spin-singlet amplitude and pseudogap in high $T_c$ cuprates
• Short-range spin correlations and pseudogap in underdoped cuprates