Pinning of holographic sliding stripes

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.
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Soumis le : jeudi 21 décembre 2017 - 00:31:10
Dernière modification le : mardi 24 avril 2018 - 17:20:04

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Niko Jokela, Matti Jarvinen, Matthew Lippert. Pinning of holographic sliding stripes. Phys.Rev.D, 2017, 96 (10), pp.106017. 〈10.1103/PhysRevD.96.106017〉. 〈hal-01669767〉



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