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What is Antiferromagnetic Phase Boundaries Explained about?

This document summarizes the results of numerically evaluating an equation to determine the boundary between the antiferromagnetic (AF) and paramagnetic (P) phases in a metallic system. The boundary is confined to a relatively narrow range of 0.883 ≤ n ≤ 1.117. In contrast, Hartree-Fock theory predicts the P phase becomes unstable at any filling if U is large enough. Also, mean-field theories tend to overestimate long-range order by preventing short-range order development. In the large-U limit at half-fill

Author

Supriya

Language

EN