Impurity effect in a holographic superconductor

A bstract We consider a holographic superconductor with homogeneous impurities added. We start with the holographic Abelian-Higgs model for s-wave superconductivity, and turn on a coupling between the gauge field and a new massive gauge field that is introduced for impurities, whose effect is examin...

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Bibliographic Details
Published in:The journal of high energy physics 2013-04, Vol.2013 (4), p.1-21, Article 128
Main Authors: Ishii, Takaaki, Sin, Sang-Jin
Format: Article
Language:English
Subjects:
Classical and Quantum Gravitation
Condensing
Elementary Particles
Fields (mathematics)
Gages
Gauges
High energy physics
Impurities
Joining
Physics
Physics and Astronomy
Quantum Field Theories
Quantum Field Theory
Quantum Physics
Relativity Theory
String Theory
Superconductivity
Superconductors
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Summary:A bstract We consider a holographic superconductor with homogeneous impurities added. We start with the holographic Abelian-Higgs model for s-wave superconductivity, and turn on a coupling between the gauge field and a new massive gauge field that is introduced for impurities, whose effect is examined in the probe limit. We find that the condensation of the massive gauge field is induced in the superconducting phase. When the coupling is sufficiently large, the mass gap in the optical conductivity disappears. A resonance peak is found in the conductivity of the massive vector field.
ISSN:1029-8479
1029-8479
DOI:10.1007/JHEP04(2013)128