Abstract
We have performed high-resolution angle-resolved photoemission spectroscopy on M x CoO 2 (M: Na, K, Rb) to clarify the band dispersion and Fermi surface inherent to CoO 2 plane. We have found that a 1 g band which forms a large hexagonal Fermi surface centered at Γ (A) point shows a dispersion kink at approximately 100 meV binding energy, irrespective of the species of alkali metals and its content ( x). We discuss the origin of kink in the dispersion in terms of the strong mass renormalization due to electron–phonon interaction and/or the hybridization of a 1 g and e g ′ bands.
Sign-in/Register to access full text options 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
