Phonon self-energy effects due to superconductivity: A real-axis formulation

F. Marsiglio; R. Akis; J. P. Carbotte

doi:10.1103/PhysRevB.45.9865

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Phonon self-energy effects due to superconductivity: A real-axis formulation

F. Marsiglio, R. Akis, J. P. Carbotte

DOI 10.1103/PhysRevB.45.9865 · Physical Review B

T1

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Abstract

The self-energy of q=0 phonons is calculated in both the superconducting and normal states, with use of a real-axis formulation, valid for arbitrary temperature, impurity scattering rate, and electron-phonon coupling strength. The calculations are performed within the Eliashberg framework. We qualitatively confirm much of the previous work done using Pade´ approximants. Besides providing quantitative corrections, we also predict an observable effect with low-frequency phonons.

Source-reported materials — not catalogue approval

Formula	Reported Tc (K)	Pressure (GPa)	Type
YBa2Cu3O7 Archive — visibility unverified Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula.	—	Pressure not reported	unknown