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Anisotropic destruction of the Fermi surface in inhomogeneous holographic lattices
Radboud Univ Nijmegen, Inst Mol & Mat, Heyendaalseweg 135, NL-6525AJ Nijmegen, Netherlands;Russian Acad Sci, Space Res Inst, Moscow 117997, Russia.
Uppsala University, Disciplinary Domain of Science and Technology, Physics, Department of Physics and Astronomy, Materials Theory. Radboud Univ Nijmegen, Inst Mol & Mat, Heyendaalseweg 135, NL-6525AJ Nijmegen, Netherlands.
Radboud Univ Nijmegen, Inst Mol & Mat, Heyendaalseweg 135, NL-6525AJ Nijmegen, Netherlands.
Leiden Univ, ITP, Inst Lorentz Theoret Phys, Niels Bohrweg 2, NL-2333CA Leiden, Netherlands.
2020 (English)In: Journal of High Energy Physics (JHEP), ISSN 1126-6708, E-ISSN 1029-8479, no 1, article id 65Article in journal (Refereed) Published
Abstract [en]

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.

Place, publisher, year, edition, pages
2020. no 1, article id 65
Keywords [en]
Holography and condensed matter physics (AdS/CMT), AdS-CFT Correspondence
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URN: urn:nbn:se:uu:diva-407434DOI: 10.1007/JHEP01(2020)065ISI: 000514315000001OAI: oai:DiVA.org:uu-407434DiVA, id: diva2:1417090
Available from: 2020-03-26 Created: 2020-03-26 Last updated: 2020-03-26Bibliographically approved

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Bagrov, Andrey A.

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4748495051525350 of 459
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