General analysis of the ARPES line shape for strongly correlated electron systems
arXiv:1407.4564 · doi:10.1103/PhysRevB.90.220505
Abstract
In many cases the standard perturbation approach appears to be too simple to describe precisely the angle resolved photoemission spectrum of strongly correlated electron system. In particular, to describe the momentum asymmetry observed in photoemission spectra of high-Tc cuprates a phenomenological approach based on extremely correlated Fermi-liquid model has been recently introduced. In this paper we analyze the general structure of the Green function of quasiparticles in strongly correlated electron systems and stress that it is defined not only by the self-energy of Hubbard quasiparticles but also by a strength operator. We show that the later leads to an additional odd momentum contribution to the spectral function and alone can explain the observed asymmetry. So, the asymmetry of the ARPES spectra can be a measure of the strength of electron correlations in materials.
arXiv comment4 pages
References in corpus (15)
- Angle-resolved photoemission spectroscopy of the cuprate superconductors
- Low-Energy Electronic Structure of the High-Tc Cuprates La2-xSrxCuO4 Studied by Angle-resolved Photoemission Spectroscopy
- Bare electron dispersion from photoemission experiments
- Self-consistent self-energy analysis of photoemission data
- Constituents of the "kink" in high-Tc cuprates
- A new hybrid LDA and Generalized Tight-Binding method for the electronic structure calculations of strongly correlated electron systems
- Extremely Correlated Fermi Liquids
- Evidence of Electron Fractionalization from Photoemission Spectra in the High Temperature Superconductors
- Hidden Fermi Liquid: The Secret of High Tc Cuprates
- Estimation of matrix element effects and determination of the Fermi surface in BSCCO systems using angle-scanned photoemission spectroscopy
- Nodal Quasiparticle Dispersion in Strongly Correlated d-wave Superconductors
- Identifying the Background Signal in ARPES of High Temperature Superconductors
- Extremely Correlated Fermi Liquid Description of Normal State ARPES in Cuprates
- Cuprates, Manganites, and Cobaltites: Multielectron Approach to the Band Structure
- Phenomenological model for the normal state ARPES line shapes of high temperature superconductors