Magnetic response in the holographic insulator/superconductor transition

Marc Montull, Oriol Pujolàs, Alberto Salvio, Pedro J. Silva

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Abstract

We study the magnetic response of holographic superconductors exhibiting an insulating 'normal' phase. These materials can be realized as a CFT compactified on a circle, which is dual to the AdS Soliton geometry. We study the response under i) magnetic fields and ii) a Wilson line on the circle. Magnetic fields lead to formation of vortices and allows one to infer that the superconductor is of type II. The response to a Wilson line is in the form of Aharonov-Bohm-like effects. These are suppressed in the holographic conductor/superconductor transition but, instead, they are unsuppressed for the insulator case. Holography, thus, predicts that generically insulators display stronger Aharonov-Bohm effects than conductors. In the fluid-mechanical limit the AdS Soliton is interpreted as a supersolid. Our results imply that supersolids display unsuppressed Aharonov-Bohm (or 'Sagnac') effects - stronger than in superfluids. © SISSA 2012.
Original languageEnglish
Article number135
JournalJournal of High Energy Physics
Volume2012
Issue number4
DOIs
Publication statusPublished - 11 May 2012

Keywords

  • Gauge-gravity correspondence
  • Holography and condensed matter physics (AdS/CMT)
  • Spontaneous symmetry breaking

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    Montull, M., Pujolàs, O., Salvio, A., & Silva, P. J. (2012). Magnetic response in the holographic insulator/superconductor transition. Journal of High Energy Physics, 2012(4), [135]. https://doi.org/10.1007/JHEP04(2012)135