X-ray Dichroism in Noncetrosymmetric crystals

Details X-ray Dichroism in Noncetrosymmetric crystals X-ray Dichroism in Noncetrosymmetric crystals

2002-10-08

arxiv.org/abs/cond-mat/0210152v1

Physics

Condensed Matter

Scientific paper

10.1103/PhysRevB.67.045111

In this paper the authors analyse near-edge absorption of x rays in noncentrosymmetric crystals. The work is motivated by recent observations of x-ray dichroic effects which stems from parity-nonconserving electron interactions. We provide a theoretical description of these experiments and show that they are sensitive to microscopic {\it polar} and {\it magnetoelectric} properties of the sample. Our derivation extends previous theoretical work on centrosymmetric systems and identifies new directions in the microscopic analysis of crystalline materials using x-ray absorption spectroscopy.

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