Abstract
Photoemission studies on barium titanate single crystals are described and it is shown that the photothreshold of a clean surface is 4⋯01 eV. Chemisorption of oxygen obeys the Elovich equation and increases the photothreshold to 4⋯58 eV. The plot of yield versus photon energy consists of three linear portions which are attributed to direct transitions in the bulk. A long wavelength tail obeys a cubic law and is tentatively attributed to defects near the surface. These results are discussed in the light of previous experiments on space charge injection into barium titanate and it is suggested that the traditional model of the metal-semiconductor interface requires modification to explain these results.
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.
