Charge-transfer strings in the extended Hubbard model for copper oxide superconductors
H. -B. Schüttler
DOI 10.1103/PhysRevB.38.2854 · Physical Review B
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Abstract
Near the Cu2+ → Cu+ valence instability, there are low-lying excitations in the extended Hubbard model for CuO2 superconductors which consist of spatially extended, contiguous strings of Cu+-O− pairs. Such strings can be electrically neutral or carry charges +e or −e. Results for the string band structure, their internal excitations, and possible attractive string-pairing interactions are presented. Important experimental implications are discussed.
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. | — | Pressure not reported | unknown |
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