Pinning of holographic sliding stripes

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http://hdl.handle.net/10138/229666

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Jokela , N , Järvinen , M & Lippert , M 2017 , ' Pinning of holographic sliding stripes ' , Physical Review D , vol. 96 , no. 10 , 106017 . https://doi.org/10.1103/PhysRevD.96.106017

Title: Pinning of holographic sliding stripes
Author: Jokela, Niko; Järvinen, Matti; Lippert, Matthew
Contributor: University of Helsinki, Department of Physics
Date: 2017-11-27
Language: eng
Number of pages: 14
Belongs to series: Physical Review D
ISSN: 2470-0010
URI: http://hdl.handle.net/10138/229666
Abstract: In a holographic probe-brane model exhibiting a spontaneously spatially modulated ground state, we introduce explicit sources of symmetry breaking in the form of ionic and antiferromagnetic lattices. For the first time in a holographic model, we demonstrate pinning, in which the translational Goldstone mode is lifted by the introduction of explicit sources of translational symmetry breaking. The numerically computed optical conductivity fits very well to a Drude-Lorentz model with a small residual metallicity, precisely matching analytic formulas for the DC conductivity. We also find an instability of the striped phase in the presence of a large-amplitude ionic lattice.
Subject: DENSITY WAVES
CHARGE
114 Physical sciences
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