Journal
PHYSICAL REVIEW LETTERS
Volume 114, Issue 25, Pages -Publisher
AMER PHYSICAL SOC
DOI: 10.1103/PhysRevLett.114.251602
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Funding
- MINECO (Ministerio de Economia y Competitividad) [FPA2011-25948]
- DURSI (Departament d'Universitats, Recerca i Societat de la Informacio, Barcelona, Spain) [2014SGR1450]
- Centro de Excelencia Severo Ochoa program [SEV-2012-0234]
- Ramon y Cajal Fellowship (MICINN-RyC Program)
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Massive gravity is holographically dual to realistic materials with momentum relaxation. The dual graviton potential encodes the phonon dynamics, and it allows for a much broader diversity than considered so far. We construct a simple family of isotropic and homogeneous materials that exhibit an interaction-driven metal-insulator transition. The transition relates to the formation of polarons-phonon-electron quasibound states that dominate the conductivities, shifting the spectral weight above a mass gap. We characterize the polaron gap, width, and dispersion.
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