XPS as a Probe of Gap Opening in Many Electron Systems

Details XPS as a Probe of Gap Opening in Many Electron Systems XPS as a Probe of Gap Opening in Many Electron Systems

2000-03-27

arxiv.org/abs/cond-mat/0003432v1

Journal of Physics: Condensed Matter 13 No. 44 (5 November 2001)

Physics

Condensed Matter

Superconductivity

8 pages, 9 eps figures

Scientific paper

Core hole photoemission (XPS) provides a powerful indirect probe of the low energy excitations of a many electron system. We argue that XPS can be used to study the way in which a gap opens at a metal-superconductor or metal- insulator transition. We consider the "universal" physics of how the loss of low energy excitations modifies XPS spectra in the context of several simple models, considering in particular the case of a two dimensional d-wave superconductor.

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