Unconventional electron states in δ-doped SmTiO3

Unconventional electron states in δ-doped SmTiO3

ABSTRACT The Mott-insulating distorted perovskite SmTiO3, doped with a single SrO layer in a quantum-well architecture is studied by the combination of density functional theory with dynamical mean-field theory. A rich correlated electronic structure in line with recent experimental investigations i...

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Autor principal: Frank Lechermann
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Lenguaje:EN
Publicado: Nature Portfolio 2017
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Acceso en línea:https://doaj.org/article/0e3d4730936c4d15860107200b022624
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spelling oai:doaj.org-article:0e3d4730936c4d15860107200b0226242021-12-02T15:05:15ZUnconventional electron states in δ-doped SmTiO310.1038/s41598-017-01847-52045-2322https://doaj.org/article/0e3d4730936c4d15860107200b0226242017-05-01T00:00:00Zhttps://doi.org/10.1038/s41598-017-01847-5https://doaj.org/toc/2045-2322ABSTRACT The Mott-insulating distorted perovskite SmTiO3, doped with a single SrO layer in a quantum-well architecture is studied by the combination of density functional theory with dynamical mean-field theory. A rich correlated electronic structure in line with recent experimental investigations is revealed by the given realistic many-body approach to a large-unit-cell oxide heterostructure. Coexistence of conducting and Mott-insulating TiO2 layers prone to magnetic order gives rise to multi-orbital electronic transport beyond standard Fermi-liquid theory. First hints towards a pseudogap opening due to electron-electron scattering within a background of ferromagnetic and antiferromagnetic fluctuations are detected.Frank LechermannNature PortfolioarticleMedicineRScienceQENScientific Reports, Vol 7, Iss 1, Pp 1-7 (2017)
institution DOAJ
collection DOAJ
language EN
topic Medicine
R
Science
Q
spellingShingle Medicine
R
Science
Q
Frank Lechermann
Unconventional electron states in δ-doped SmTiO3
description ABSTRACT The Mott-insulating distorted perovskite SmTiO3, doped with a single SrO layer in a quantum-well architecture is studied by the combination of density functional theory with dynamical mean-field theory. A rich correlated electronic structure in line with recent experimental investigations is revealed by the given realistic many-body approach to a large-unit-cell oxide heterostructure. Coexistence of conducting and Mott-insulating TiO2 layers prone to magnetic order gives rise to multi-orbital electronic transport beyond standard Fermi-liquid theory. First hints towards a pseudogap opening due to electron-electron scattering within a background of ferromagnetic and antiferromagnetic fluctuations are detected.
format article
author Frank Lechermann
author_facet Frank Lechermann
author_sort Frank Lechermann
title Unconventional electron states in δ-doped SmTiO3
title_short Unconventional electron states in δ-doped SmTiO3
title_full Unconventional electron states in δ-doped SmTiO3
title_fullStr Unconventional electron states in δ-doped SmTiO3
title_full_unstemmed Unconventional electron states in δ-doped SmTiO3
title_sort unconventional electron states in δ-doped smtio3
publisher Nature Portfolio
publishDate 2017
url https://doaj.org/article/0e3d4730936c4d15860107200b022624
work_keys_str_mv AT franklechermann unconventionalelectronstatesinddopedsmtio3
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