Abstract
Partial substitution of nitrogen by carbon in the metalloid sublattice of NbN possessing the NaCl structure leads to an increase in the temperature of the transition to the superconducting state. The changes in the local density of states on formation of NbC x N 1- x alloys, which may be related to this increase, were investigated by Auger electron spectroscopy. The Nb M 5 N 2,3 V, Nb M 5 VV, C KVV and N KVV Auger spectra for NbC x N 1- x over the range 0.06< x<0.90 were obtained. The interpretation of the line shape is based on the results of the band structure calculations. It was shown that the effective hole-hole interaction energies, U ef, in the valence band on metal sites are negligible compared with those on metalloid ones. Furthermore, localization of two-hole C2p states depends on the carbonitride composition and U ef has a peculiarity at an x value of about 0.2.
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 callMore From: Journal of Electron Spectroscopy and Related Phenomena
Disclaimer: 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.
