Theory of fluctuating charge ordering in the pseudogap phase of cuprates via a preformed pair approach
Yan He, Peter Scherpelz, K. Levin
DOI 10.1103/PhysRevB.88.064516 · Physical Review B
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Abstract
We study the static and dynamic behavior of charge ordering within a d-wave pair pseudogap (pg) scenario. This is addressed using a density-density correlation function derived from the standard pg self-energy Σ and compatible with the longitudinal and transverse sum rules. The broadening factor γ in Σ reflects the breaking of pairs into constituent fermions. We apply this form for Σ (derived elsewhere for high fields) to demonstrate the existence of quantum oscillations in a non-Fermi liquid pg state. Our conclusion is that the pseudogap-induced pair breaking, via γ, allows the underlying fermiology to be revealed; d-wave (as distinct from s-wave) pairing in YBCO, with finite ω and γ enables antinodal fluctuations, despite their competition in the static and superconducting limits.
Source-reported materials — not catalogue approval
| Formula | Reported Tc (K) | Pressure (GPa) | Type |
|---|---|---|---|
| YBa2Cu3O7-δ Archive — visibility unverified Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula. | — | Pressure not reported | unknown |
| 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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