X-ray photoemission study of NiS2-xSex (x = 0.0–1.2)

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.

Preview

PDF Photoemission.pdf Download (121kB)

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 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
Publication:	Physical Review B (Condensed Matter and Materials Physics)
Publisher:	American Physical Society
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
URI:	http://eprints.iisc.ac.in/id/eprint/1972

Actions (login required)

View Item