Resonating–valence-bond theory of phase transitions and superconductivity in La2CuO4-based compounds
P. W. Anderson, G. Baskaran, Z. Zou, T. Hsu
DOI 10.1103/PhysRevLett.58.2790 · Physical Review Letters
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Abstract
We identify the mysterious high-T ‘‘twitch’’ transition in La2CuO4 with the mean-field resonating-valence-bond transition of the Heisenberg model of Baskaran, Zou, and Anderson. The structure distortions are caused by Coulomb correlations of the pair wave function. In the pure compound the pseudo-Fermi surface of the spin soliton nests and antiferromagnetism occurs at 240 K. We discuss briefly superconductivity and the nature of excitations in the system.
Source-reported materials — not catalogue approval
| Formula | Reported Tc (K) | Pressure (GPa) | Type |
|---|---|---|---|
| La2CuO4 Archive — visibility unverified Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula. | 240 | Pressure not reported | onset |
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