The surface stability of CoS2(100)

Ning Wu, Renat F Sabirianov, Chun Gang Duan, W. N. Mei, David Wisbey, Ya B. Losovyj, M. Manno, C. Leighton, En Cai, Jiandi Zhang, P. A. Dowben

Research output: Contribution to journalReview article

4 Citations (Scopus)

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 CoS 2 bulk, lie at higher binding energies than those of segregatedsulfur layers. This is discussed in terms of the stability of various surface structures.

Original languageEnglish (US)
Article number215231
JournalJournal of Physics Condensed Matter
Volume20
Issue number21
DOIs
StatePublished - Dec 1 2008

Fingerprint

surface stability
Sulfur
Cobalt
sulfur
cobalt
Photoemission
Binding energy
Surface structure
Phase separation
Annealing
photoelectric emission
binding energy
annealing
Experiments

ASJC Scopus subject areas

  • Materials Science(all)
  • Condensed Matter Physics

Cite this

Wu, N., Sabirianov, R. F., Duan, C. G., Mei, W. N., Wisbey, D., Losovyj, Y. B., ... Dowben, P. A. (2008). The surface stability of CoS2(100). Journal of Physics Condensed Matter, 20(21), [215231]. https://doi.org/10.1088/0953-8984/20/21/215231

The surface stability of CoS2(100). / Wu, Ning; Sabirianov, Renat F; Duan, Chun Gang; Mei, W. N.; Wisbey, David; Losovyj, Ya B.; Manno, M.; Leighton, C.; Cai, En; Zhang, Jiandi; Dowben, P. A.

In: Journal of Physics Condensed Matter, Vol. 20, No. 21, 215231, 01.12.2008.

Research output: Contribution to journalReview article

Wu, N, Sabirianov, RF, Duan, CG, Mei, WN, Wisbey, D, Losovyj, YB, Manno, M, Leighton, C, Cai, E, Zhang, J & Dowben, PA 2008, 'The surface stability of CoS2(100)', Journal of Physics Condensed Matter, vol. 20, no. 21, 215231. https://doi.org/10.1088/0953-8984/20/21/215231
Wu, Ning ; Sabirianov, Renat F ; Duan, Chun Gang ; Mei, W. N. ; Wisbey, David ; Losovyj, Ya B. ; Manno, M. ; Leighton, C. ; Cai, En ; Zhang, Jiandi ; Dowben, P. A. / The surface stability of CoS2(100). In: Journal of Physics Condensed Matter. 2008 ; Vol. 20, No. 21.
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AB - 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 CoS 2 bulk, lie at higher binding energies than those of segregatedsulfur layers. This is discussed in terms of the stability of various surface structures.

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