Local particle-hole pair excitations by SU(2) symmetry fluctuations

Abstract Understanding the pseudo-gap phase which opens in the under-doped regime of cuprate superconductors is one of the most enduring challenges of the physics of these compounds. A depletion in the electronic density of states is observed, which is gapping out part of the Fermi surface, leading...

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Autores principales:	X. Montiel, T. Kloss, C. Pépin
Formato:	article
Lenguaje:	EN
Publicado:	Nature Portfolio 2017
Materias:	Medicine R Science Q
Acceso en línea:	https://doaj.org/article/510505b41e084cf7a9bd95f40e27e3ca
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spelling	oai:doaj.org-article:510505b41e084cf7a9bd95f40e27e3ca2021-12-02T16:07:48ZLocal particle-hole pair excitations by SU(2) symmetry fluctuations10.1038/s41598-017-01538-12045-2322https://doaj.org/article/510505b41e084cf7a9bd95f40e27e3ca2017-06-01T00:00:00Zhttps://doi.org/10.1038/s41598-017-01538-1https://doaj.org/toc/2045-2322Abstract Understanding the pseudo-gap phase which opens in the under-doped regime of cuprate superconductors is one of the most enduring challenges of the physics of these compounds. A depletion in the electronic density of states is observed, which is gapping out part of the Fermi surface, leading to the formation of mysterious lines of massless excitations- the Fermi arcs. Here we give a new theoretical account of the physics of the pseudo-gap phase in terms of the emergence of local patches of particle-hole pairs generated by SU(2) symmetry fluctuations. The proliferation of these local patches accounts naturally for the robustness of the pseudo-gap phase to disturbances like disorder or magnetic field and is shown to gap out part of the Fermi surface, leading to the formation of the Fermi arcs. Most noticeably, we show that these patches induce a modulated charge distribution on the Oxygen atoms, in remarkable agreement with recent X-ray and STM observations.X. MontielT. KlossC. PépinNature PortfolioarticleMedicineRScienceQENScientific Reports, Vol 7, Iss 1, Pp 1-9 (2017)
institution	DOAJ
collection	DOAJ
language	EN
topic	Medicine R Science Q
spellingShingle	Medicine R Science Q X. Montiel T. Kloss C. Pépin Local particle-hole pair excitations by SU(2) symmetry fluctuations
description	Abstract Understanding the pseudo-gap phase which opens in the under-doped regime of cuprate superconductors is one of the most enduring challenges of the physics of these compounds. A depletion in the electronic density of states is observed, which is gapping out part of the Fermi surface, leading to the formation of mysterious lines of massless excitations- the Fermi arcs. Here we give a new theoretical account of the physics of the pseudo-gap phase in terms of the emergence of local patches of particle-hole pairs generated by SU(2) symmetry fluctuations. The proliferation of these local patches accounts naturally for the robustness of the pseudo-gap phase to disturbances like disorder or magnetic field and is shown to gap out part of the Fermi surface, leading to the formation of the Fermi arcs. Most noticeably, we show that these patches induce a modulated charge distribution on the Oxygen atoms, in remarkable agreement with recent X-ray and STM observations.
format	article
author	X. Montiel T. Kloss C. Pépin
author_facet	X. Montiel T. Kloss C. Pépin
author_sort	X. Montiel
title	Local particle-hole pair excitations by SU(2) symmetry fluctuations
title_short	Local particle-hole pair excitations by SU(2) symmetry fluctuations
title_full	Local particle-hole pair excitations by SU(2) symmetry fluctuations
title_fullStr	Local particle-hole pair excitations by SU(2) symmetry fluctuations
title_full_unstemmed	Local particle-hole pair excitations by SU(2) symmetry fluctuations
title_sort	local particle-hole pair excitations by su(2) symmetry fluctuations
publisher	Nature Portfolio
publishDate	2017
url	https://doaj.org/article/510505b41e084cf7a9bd95f40e27e3ca
work_keys_str_mv	AT xmontiel localparticleholepairexcitationsbysu2symmetryfluctuations AT tkloss localparticleholepairexcitationsbysu2symmetryfluctuations AT cpepin localparticleholepairexcitationsbysu2symmetryfluctuations
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Local particle-hole pair excitations by SU(2) symmetry fluctuations

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