Theory of isotope dependence of photoemission spectra of high-Tcsuperconducting cuprates

2004/09/20 by G. Seibold, M. Grilli
Materials Science · Physics and Astronomy · #Advanced Chemical Physics Studies #Magnetic and transport properties of perovskites and related materials #Physics of Superconductivity and Magnetism #cond-mat.str-el #cond-mat.supr-con

paper · pdf · doi:10.1103/physrevb.72.104519

5 pages and 2 figures

arxiv created 2004/09/20 · openalex publication_date 2005/09/29 · arxiv updated 2009/12/01 · openalex created_date 2019/04/01 · openalex updated_date 2026/07/28

Abstract

We investigate the effect of isotope substitution on the electronic spectral functions within a model where the charge carriers are coupled to bosonic charge-order (CO) fluctuations centered around some mean frequency \ensuremathω₀ and with enhanced scattering at wave vector q_c. It is shown that the mass dependence of \ensuremathω₀ is not sufficient to account, especially at high energies, for the dispersion shifts experimentally observed in an optimally doped superconducting cuprate. Our analysis rather suggests that isotope substitution induces a change of the spatial CO correlations which gives a good account of the experimental data.

Citations

• Quantum Phase Transitions in the Cuprate SuperconductorBi2Sr2−xLaxCuO6+δ
• Evidence for ubiquitous strong electron–phonon coupling in high-temperature superconductors
• Electronic Spectra and Their Relation to the(π,π)Collective Mode in High-TcSuperconductors
• Anomalous Isotopic Effect Near the Charge-Ordering Quantum Criticality