Krishnakumar, SR and Sarma, DD (2003) X-ray photoemission study of NiS2-xSex (x = 0.0–1.2). In: Physical Review B (Condensed Matter and Materials Physics), 68 . 155110-1-7.
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 NiS2 in 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:||Journal Article|
|Additional Information:||Copyright for this article belongs to American Physical Society (APS).|
|Department/Centre:||Division of Chemical Sciences > Solid State & Structural Chemistry Unit|
|Date Deposited:||15 Sep 2004|
|Last Modified:||19 Sep 2010 04:16|
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