The Surface Stability of CoS2(100)

Authors

Ning Wu, University of Nebraska-LincolnFollow
Renat F. Sabirianov, University of Nebraska at OmahaFollow
Chun-Gang Duan, University of Nebraska-LincolnFollow
Wai-Ning Mei, University of Nebraska at OmahaFollow
David Wisbey, University of Nebraska-LincolnFollow
Ya B. Losovyj, Louisiana State University-Baton RougeFollow
M. Manno, University of Minnesota-Twin Cities
Christopher Leighton, University of Minnesota-Twin CitiesFollow
En Cai, Florida International UniversityFollow
Jiandi Zhang, Florida International UniversityFollow
Peter Dowben, University of Nebraska - LincolnFollow

Document Type

Article

Publication Date

4-2008

Publication Title

Journal of Physics: Condensed Matter

Volume

20

Abstract

The stability of various possible terminations of the CoS2 (1 × 1) surface have been explored and theoretical expectations are found to agree with experiment. With extensive annealing, there is a phase separation at the (100) surface of CoS2. Sulfur segregation to the surface leads to a significant change in the largely sulfur bands due to changes in the hybridized bands, with cobalt. Resonant photoemission spectra indicate clearly that the hybridized cobalt and sulfur bands, characteristic of the CoS2 bulk, lie at higher binding energies than those of segregated sulfur layers. This is discussed in terms of the stability of various surface structures.

Comments

Published in the Journal of Physics: Condensed Matter 20 (2008) 215231 (6pp). DOI:10.1088/0953-8984/20/21/215231.

Copyright 2008 Journal of Physics: Condensed Matter. Used by permission

Recommended Citation

Wu, Ning; Sabirianov, Renat F.; Duan, Chun-Gang; Mei, Wai-Ning; Wisbey, David; Losovyj, Ya B.; Manno, M.; Leighton, Christopher; Cai, En; Zhang, Jiandi; and Dowben, Peter, "The Surface Stability of CoS2(100)" (2008). Physics Faculty Publications. 34.
https://digitalcommons.unomaha.edu/physicsfacpub/34