Abstract
We report angle-resolved photoemission measurements on a Mott insulating CuO 2 plane compound Ca 2CuO 2Cl 2. This material is a parent compound to the high- T c superconductors. We observe a loss in spectral weight of the lowest energy feature as it crosses the approximate position where band theory predicts the existence of the Fermi surface. Complimented with an analysis from metallic Bi 2Sr 2CaCu 2O 8, this suggests that the loss of spectral weight is due to the remnants of the non-interacting Fermi surface that is destroyed in the insulator. Further analysis shows a d-wave like dispersion along this ‘Fermi surface’ contour. This suggests that the d-wave like dispersion seen in the high-energy pseudogap is a remnant property of the insulator.
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.
