Finite band inversion of angular-resolved photoemission in Bi2Sr2CaCu2O8+δ and comparison with optics
Year: 2008
Type: article
Abstract: Using a maximum entropy technique within a finite band Eliashberg formalism, we extract from recent high accuracy nodal direction angular-resolved photoemission spectroscopy data in optimally doped ${\mathrm{Bi}}_{2}{\mathrm{Sr}}_{2}\mathrm{Ca}{\mathrm{Cu}}_{2}{\mathrm{O}}_{8+\ensuremath{\delta}}$ (Bi2212) a quasiparticle electron-boson spectral density. Both normal and superconducting states with $d$-wave gap symmetry are treated. Finite and infinite band results are considered and contrasted. We compare with results obtained for the related transport spectral density, which follows from a similar inversion of optical data. We discuss the implication of our results for quasiparticle renormalizations in the antinodal direction.
Source: Physical Review B
Authors: E. Schachinger, J. P. Carbotte
Language: Latvian
Subfield: Condensed Matter Physics
Field: Physics and Astronomy
Domain: Physical Sciences
Open Access status: green
OpenAlex ID: W2122273