Resolution of the negative U problem in the early transition metals: a reinterpretation of the LVV Auger spectra

Sarma, DD and Barman, SR and Seva, Nimkar and Krishnamurthy, HR (1992) Resolution of the negative U problem in the early transition metals: a reinterpretation of the LVV Auger spectra. In: 2nd International Workshop on Auger Spectroscopy and Electronic Structure (WASES-II), 4-6 Sept. 1991, Malmo, Sweden, pp. 184-186.

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Abstract

The early transition elements (Sc-Mn) exhibit $L_{23}-M_{45}M_{45}$ spectra shifted to higher kinetic energy compared to the self-convoluted DOS. In the past, this was interpreted as a negative U in these materials. the authors show that this anomalous behaviour can be explained without invoking negative U, if the presence of a screening electron in the initial state of the Auger process is taken into account. In that case, the Auger spectrum not only has two-hole-like final states, but also one-hole-like final states that were not accounted for earlier. This provides a new and consistent description of the Auger process

Item Type:	Conference Paper
Publisher:	IOP publishing
Additional Information:	Copyright of this article belongs to IOP publishing.
Keywords:	Auger effect;chromium;manganese;scandium;titanium;vanadium
Department/Centre:	Division of Chemical Sciences > Solid State & Structural Chemistry Unit Division of Physical & Mathematical Sciences > Physics
Date Deposited:	11 Jan 2008
Last Modified:	12 Jan 2012 07:10
URI:	http://eprints.iisc.ac.in/id/eprint/11134

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