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27 April 2024

» arxiv » 1001.5293

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Coexistence of Bound and Virtual-bound States in Shallow-core to Valence Spectroscopies
Subhra Sen Gupta ; J. A. Bradley ; M. W. Haverkort ; G. T. Seidler ; A. Tanaka ; G. A. Sawatzky ;
Date:	29 Jan 2010
Abstract:	We develop the theory for shallow-core to valence excitations when the multiplet spread is larger than the core-hole attraction, e.g., if the core and valence orbitals have the same principal quantum number. This results in a cross-over from bound to virtual-bound excited states with increasing energy and in large differences between dipole and high-order multipole transitions, as observed in inelastic x-ray scattering. The theory is important to obtain ground state information from x-ray spectroscopies of strongly correlated transition metal, rare-earth and actinide systems.
Source:	arXiv, 1001.5293
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