X-ray diffraction of a disordered charge density wave

TL;DR

This paper analyzes the X-ray diffraction spectrum of a disordered charge density wave, revealing asymmetric divergent peaks characteristic of a Bragg glass phase, with computed peak shapes and experimental implications.

Contribution

It provides a theoretical calculation of the diffraction peak shapes for a pinned charge density wave in a Bragg glass phase, linking disorder effects to observable diffraction features.

Findings

Identifies two asymmetric divergent peaks in the diffraction spectrum.

Calculates the specific shape of these diffraction peaks.

Discusses how these features can be observed experimentally.

Abstract

We study the X-ray diffraction spectrum produced by a collectively pinned charge density wave (CDW), for which one can expect a Bragg glass phase. The spectrum consists of two asymmetric divergent peaks. We compute the shape of the peaks, and discuss the experimental consequences.