Abstract
In order to describe the variety of results observed in different cuprates the original Hubbard model is too simple. In this paper we consider a generalization of it, where correlated hopping and intersite Coulomb interaction are considered. By using the Composite Operator Method we analyze the effect of these extra terms on the Fermi surface and the relative position of the van Hove singularity with respect to the Fermi level. Comparison with recent ARPES data on La 2− x Sr x CuO 4 is discussed.
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.
