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Fermi surface in La-based cuprate superconductors from Compton scattering imaging

Compton scattering provides invaluable information on the underlying Fermi surface (FS) and is a powerful tool complementary to angle-resolved photoemission spectroscopy and quantum oscillation measurements. Here we perform high-resolution Compton scattering measurements for La(2−x)Sr(x)CuO(4) with...

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Autores principales: Yamase, Hiroyuki, Sakurai, Yoshiharu, Fujita, Masaki, Wakimoto, Shuichi, Yamada, Kazuyoshi
Formato: Online Artículo Texto
Lenguaje:English
Publicado: Nature Publishing Group UK 2021
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC8044246/
https://www.ncbi.nlm.nih.gov/pubmed/33850119
http://dx.doi.org/10.1038/s41467-021-22229-6
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author Yamase, Hiroyuki
Sakurai, Yoshiharu
Fujita, Masaki
Wakimoto, Shuichi
Yamada, Kazuyoshi
author_facet Yamase, Hiroyuki
Sakurai, Yoshiharu
Fujita, Masaki
Wakimoto, Shuichi
Yamada, Kazuyoshi
author_sort Yamase, Hiroyuki
collection PubMed
description Compton scattering provides invaluable information on the underlying Fermi surface (FS) and is a powerful tool complementary to angle-resolved photoemission spectroscopy and quantum oscillation measurements. Here we perform high-resolution Compton scattering measurements for La(2−x)Sr(x)CuO(4) with x = 0.08 (T(c) = 20 K) at 300 K and 150 K, and image the momentum distribution function in the two-dimensional Brillouin zone. We find that the observed images cannot be reconciled with the conventional hole-like FS believed so far. Instead, our data imply that the FS is strongly deformed by the underlying nematicity in each CuO(2) plane, but the bulk FSs recover the fourfold symmetry. We also find an unusually strong temperature dependence of the momentum distribution function, which may originate from the pseudogap formation in the presence of the reconstructed FSs due to the underlying nematicity. Additional measurements for x = 0.15 and 0.30 at 300 K suggest similar FS deformation with weaker nematicity, which nearly vanishes at x = 0.30.
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spelling pubmed-80442462021-04-30 Fermi surface in La-based cuprate superconductors from Compton scattering imaging Yamase, Hiroyuki Sakurai, Yoshiharu Fujita, Masaki Wakimoto, Shuichi Yamada, Kazuyoshi Nat Commun Article Compton scattering provides invaluable information on the underlying Fermi surface (FS) and is a powerful tool complementary to angle-resolved photoemission spectroscopy and quantum oscillation measurements. Here we perform high-resolution Compton scattering measurements for La(2−x)Sr(x)CuO(4) with x = 0.08 (T(c) = 20 K) at 300 K and 150 K, and image the momentum distribution function in the two-dimensional Brillouin zone. We find that the observed images cannot be reconciled with the conventional hole-like FS believed so far. Instead, our data imply that the FS is strongly deformed by the underlying nematicity in each CuO(2) plane, but the bulk FSs recover the fourfold symmetry. We also find an unusually strong temperature dependence of the momentum distribution function, which may originate from the pseudogap formation in the presence of the reconstructed FSs due to the underlying nematicity. Additional measurements for x = 0.15 and 0.30 at 300 K suggest similar FS deformation with weaker nematicity, which nearly vanishes at x = 0.30. Nature Publishing Group UK 2021-04-13 /pmc/articles/PMC8044246/ /pubmed/33850119 http://dx.doi.org/10.1038/s41467-021-22229-6 Text en © The Author(s) 2021 https://creativecommons.org/licenses/by/4.0/Open Access This article is licensed under a Creative Commons Attribution 4.0 International License, which permits use, sharing, adaptation, distribution and reproduction in any medium or format, as long as you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons license, and indicate if changes were made. The images or other third party material in this article are included in the article’s Creative Commons license, unless indicated otherwise in a credit line to the material. If material is not included in the article’s Creative Commons license and your intended use is not permitted by statutory regulation or exceeds the permitted use, you will need to obtain permission directly from the copyright holder. To view a copy of this license, visit http://creativecommons.org/licenses/by/4.0/ (https://creativecommons.org/licenses/by/4.0/) .
spellingShingle Article
Yamase, Hiroyuki
Sakurai, Yoshiharu
Fujita, Masaki
Wakimoto, Shuichi
Yamada, Kazuyoshi
Fermi surface in La-based cuprate superconductors from Compton scattering imaging
title Fermi surface in La-based cuprate superconductors from Compton scattering imaging
title_full Fermi surface in La-based cuprate superconductors from Compton scattering imaging
title_fullStr Fermi surface in La-based cuprate superconductors from Compton scattering imaging
title_full_unstemmed Fermi surface in La-based cuprate superconductors from Compton scattering imaging
title_short Fermi surface in La-based cuprate superconductors from Compton scattering imaging
title_sort fermi surface in la-based cuprate superconductors from compton scattering imaging
topic Article
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC8044246/
https://www.ncbi.nlm.nih.gov/pubmed/33850119
http://dx.doi.org/10.1038/s41467-021-22229-6
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