Krishnakumar, S. R. ; Sarma, D. D. (2003) X-ray photoemission study of NiS2−xSex (x=0.0-1.2) Physical Review B: Condensed Matter and Materials Physics, 68 (15). 155110 _1-155110 _7. ISSN 1098-0121
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Official URL: http://prb.aps.org/abstract/PRB/v68/i15/e155110
Related URL: http://dx.doi.org/10.1103/PhysRevB.68.155110
Abstract
Electronic structure of NiS2−xSex system has been investigated for various compositions (x) using x-ray photoemission spectroscopy. An analysis of the core-level as well as the valence-band spectra of NiS2in conjunction with many-body cluster calculations provides a quantitative description of the electronic structure of this compound. With increasing Se content, the on-site Coulomb correlation strength (U) does not change, while the bandwidth W of the system increases, driving the system from a covalent insulating state to a pd-metallic state.
| Item Type: | Article |
|---|---|
| Source: | Copyright of this article belongs to The American Physical Society. |
| ID Code: | 46387 |
| Deposited On: | 04 Jul 2011 11:55 |
| Last Modified: | 04 Jul 2011 11:55 |
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