Anisotropic destruction of the Fermi surface in inhomogeneous holographic lattices
| Autor: | Alexander Krikun, Askar A. Iliasov, Andrey A. Bagrov, Mikhail I. Katsnelson |
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| Rok vydání: | 2020 |
| Předmět: |
High Energy Physics - Theory
Nuclear and High Energy Physics Other Physics Topics Theory of Condensed Matter FOS: Physical sciences Electron AdS-CFT Correspondence 01 natural sciences Superconductivity (cond-mat.supr-con) Condensed Matter - Strongly Correlated Electrons 0103 physical sciences lcsh:Nuclear and particle physics. Atomic energy. Radioactivity 010306 general physics Translational symmetry Anisotropy Physics Condensed matter physics Strongly Correlated Electrons (cond-mat.str-el) 010308 nuclear & particles physics Condensed Matter - Superconductivity Fermi surface Annan fysik Fermion Brillouin zone Holography and condensed matter physics (AdS/CMT) High Energy Physics - Theory (hep-th) Quasiparticle lcsh:QC770-798 Phenomenology (particle physics) |
| Zdroj: | Journal of High Energy Physics, 1 Journal of High Energy Physics Journal of High Energy Physics, Vol 2020, Iss 1, Pp 1-19 (2020) |
| ISSN: | 1029-8479 |
| Popis: | We analyze fermionic response of strongly correlated holographic matter in presence of inhomogeneous periodically modulated potential mimicking the crystal lattice. The modulation is sourced by a scalar operator that explicitly breaks the translational symmetry in one direction. We compute the fermion spectral function and show that it either exhibits a well defined Fermi surface with umklapp gaps opening on the Brillouin zone boundary at small lattice wave vector, or, when the wave vector is large, the Fermi surface is anisotropically deformed and the quasiparticles get significantly broadened in the direction of translation symmetry breaking. Making use of the ability of our model to smoothly extrapolate to the homogeneous Q-lattice like setup, we show that this novel effect is not due to the periodic modulation of the potential and Umklapp physics, but rather due to the anisotropic features of the holographic horizon. That means it encodes novel physics of strongly correlated critical systems which may be relevant for phenomenology of exotic states of electron matter. Comment: 25 pages, 17 figures |
| Databáze: | OpenAIRE |
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