Optical response for a discrete stripe

TL;DR

This paper investigates how pinning impurities affect the optical response of charge stripes in cuprates, emphasizing the importance of a discrete model over a continuum approach based on recent experimental data.

Contribution

It introduces a discrete model for charge stripes and compares its relevance to continuum models in explaining optical conductivity measurements.

Findings

Discrete description better matches experimental optical conductivity data.

Pinning impurities significantly influence stripe optical response.

Discrete models provide more accurate insights than continuum ones.

Abstract

The optical response of a charge stripe in the presence of pinning impurities is investigated. We address the issue of a discrete description of the stripe, and discuss its quantitative relevance with respect to a continuum one in the light of recent optical-conductivity measurements in cuprate compounds.