Theory of angle-resolved photoemission from high-Tc cuprate oxides
Ming-wen Xiao, Zheng-zhong Li
DOI 10.1103/PhysRevB.49.13160 · Physical Review B
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Abstract
In this paper, we find that the strong correlation that exists in the high-Tc cuprate oxides can lead to both elastic and inelastic angle-resolved photoemission spectroscopies. In the elastic process the correlation only produces a normalizing factor to the matrix element of the photon-electron interaction; this term accounts for the peak, satisfies the sum rule, and has a superconducting gap. In the inelastic process the correlation can cause the photoelectrons to scatter inelastically with the charge and spin fluctuations and contributes a large background to the spectroscopy. In particular, the background does not satisfy the sum rule, so that the whole intensity is of non-sum-rule type. It also has an energy threshold in the superconducting state that results in a dip in the spectroscopy. Our theoretical predictions agree with the large background, non-sum-rule, and dip observed in the experiments.
Source-reported materials — not catalogue approval
| Formula | Reported Tc (K) | Pressure (GPa) | Type |
|---|---|---|---|
| Bi2Sr2CaCu2O8 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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