Impurity scattering in unconventional density waves
Bal\'azs D\'ora, Attila Virosztek, Kazumi Maki
TL;DR
This paper studies how nonmagnetic impurities affect the properties of quasi-one-dimensional unconventional density waves, revealing similarities to d-wave superconductors and identifying distinct optical conductivity behaviors.
Contribution
It provides a detailed analysis of impurity effects on UDW, including thermodynamic properties and optical conductivity, highlighting new directional dependencies.
Findings
Thermodynamics resemble d-wave superconductor in the Born limit.
Four distinct optical conductivity curves identified.
Impurity effects depend on electric field direction and gap wavevector.
Abstract
We have investigated the effect of nonmagnetic impurities on the quasi-one-dimensional unconventional density wave (UDW) ground state. The thermodynamics were found to be close to those of a d-wave superconductor in the Born limit. Four different optical conductivity curves were found depending on the direction of the applied electric field and on the wavevector dependence of the gap.
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