Abstract
AbstractThis paper presents a theoretical approach developed for describing the field emission characteristics of YBa2Cu3O7−y copper oxide high‐Tc superconductors (HTSCs) in the normal state. The approach takes into account both the topological features of the essentially anisotropic band structure of such compounds (using the strong‐bond approximation) and the bending of energy bands induced by field penetration under the conditions of field emission experiments. This field penetration results from the low concentration of mobile charge carriers. Numerical calculations have been performed, and approximate analytical expressions derived, for field emission spectra from the (100) and (010) faces. The theoretical results obtained are able to account for the main ‘abnormal’ experimental characteristics of field emission from the (100) plane of YBa2Cu3O7−y. It has been shown that detailed field emission spectroscopy data for type YBa2Cu3O7−y HTSC emitters make it possible to investigate the main parameters of the band structure of these compounds. Copyright © 2004 John Wiley & Sons, Ltd.
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.
