Accurate Computation of the Magnetic Susceptibility for the Normal Phase of Organic Conductors

2000/11/09 by S. Moukouri, Moukouri, S.
Materials Science · Physics and Astronomy · #FOS: Physical sciences #Machine Learning in Materials Science #Organic and Molecular Conductors Research #Strongly Correlated Electrons (cond-mat.str-el) #cond-mat.str-el

paper · pdf · doi:10.48550/arxiv.cond-mat/0011169

4 pages, 3 figures

arxiv created 2000/11/09 · openalex publication_date 2000/11/09 · arxiv updated 2009/11/30 · openalex created_date 2016/06/24 · openalex updated_date 2026/07/28

Abstract

The magnetic susceptibility of the quarter-filled one-dimensional extended Hubbard model is calculated using the density-matrix renormalization group technique. It is found that in the charge gap regime of the model (U> 4t and V > 2t), or in the metallic region with important superconductive fluctuations (U<4t and V>2t), χ(T) displays a singularity at T=0 and an inflection point at low temperatures that are similar to what occurs in the spin-half quantum spin chain. These results, whose accuracy outdoes that of any other available technique, are useful data which allow a comparison between theory and experiment in the normal phase of the organic conductors.

Related

• Antiferromagnetism and Superconductivity in a model of Quasi 1D Organic Conductors
• The Hubbard Model: Introduction and Selected Rigorous Results
• Temperature Evolution of the Quantum Hall Effect in Quasi-One-Dimensional Organic Conductors
• Low density ferromagnetism in Extended Hubbard ( t-t'-U ) Model
• The normal phase of quasi-one-dimensional organic superconductors