A close look into the low energy region of the xas spectra: The xanes region

Abstract

The interest in XANES spectroscopy is growing systematically in material sciences as it is a very unique local probe, chemically selective, giving access to fine details of the local atomic structure and electronic state of the photoabsorber, which are hardly reached by other techniques. The recent progresses in theory and computation have extended the application of XANES spectroscopy in many different fields. This chapter aims to be a guide across the different approaches to XANES data analysis, from the phenomenological semi-quantitative methods, to accurate ab-initio modelling and data fitting.