Universal Structural Influence on the 2D Electron Gas at SrTiO3 Surfaces

Abstract The 2‐dimensional electron gas (2DEG) found at the surface of SrTiO3 and related interfaces has attracted significant attention as a promising basis for oxide electronics. In order to utilize its full potential, the response of this 2DEG to structural changes and surface modification must b...

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Autores principales:	Eduardo B. Guedes, Stefan Muff, Walber H. Brito, Marco Caputo, Hang Li, Nicholas C. Plumb, J. Hugo Dil, Milan Radović
Formato:	article
Lenguaje:	EN
Publicado:	Wiley 2021
Materias:	2‐dimensional electron gas angle‐resolved photoemission spectroscopy density functional theory strontium titanate Science Q
Acceso en línea:	https://doaj.org/article/149d162699614e70879913b916181a65
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spelling	oai:doaj.org-article:149d162699614e70879913b916181a652021-11-17T08:40:31ZUniversal Structural Influence on the 2D Electron Gas at SrTiO3 Surfaces2198-384410.1002/advs.202100602https://doaj.org/article/149d162699614e70879913b916181a652021-11-01T00:00:00Zhttps://doi.org/10.1002/advs.202100602https://doaj.org/toc/2198-3844Abstract The 2‐dimensional electron gas (2DEG) found at the surface of SrTiO3 and related interfaces has attracted significant attention as a promising basis for oxide electronics. In order to utilize its full potential, the response of this 2DEG to structural changes and surface modification must be understood in detail. Here, a study of the detailed electronic structure evolution of the 2DEG as a function of sample temperature and surface step density is presented. By comparing the experimental results with ab initio calculations, it is shown that local structure relaxations cause a metal‐insulator transition of the system around 135 K. This study presents a new and simple way of tuning the 2DEG via surface vicinality and identifies how the operation of prospective devices will respond to changes in temperature.Eduardo B. GuedesStefan MuffWalber H. BritoMarco CaputoHang LiNicholas C. PlumbJ. Hugo DilMilan RadovićWileyarticle2‐dimensional electron gasangle‐resolved photoemission spectroscopydensity functional theorystrontium titanateScienceQENAdvanced Science, Vol 8, Iss 22, Pp n/a-n/a (2021)
institution	DOAJ
collection	DOAJ
language	EN
topic	2‐dimensional electron gas angle‐resolved photoemission spectroscopy density functional theory strontium titanate Science Q
spellingShingle	2‐dimensional electron gas angle‐resolved photoemission spectroscopy density functional theory strontium titanate Science Q Eduardo B. Guedes Stefan Muff Walber H. Brito Marco Caputo Hang Li Nicholas C. Plumb J. Hugo Dil Milan Radović Universal Structural Influence on the 2D Electron Gas at SrTiO3 Surfaces
description	Abstract The 2‐dimensional electron gas (2DEG) found at the surface of SrTiO3 and related interfaces has attracted significant attention as a promising basis for oxide electronics. In order to utilize its full potential, the response of this 2DEG to structural changes and surface modification must be understood in detail. Here, a study of the detailed electronic structure evolution of the 2DEG as a function of sample temperature and surface step density is presented. By comparing the experimental results with ab initio calculations, it is shown that local structure relaxations cause a metal‐insulator transition of the system around 135 K. This study presents a new and simple way of tuning the 2DEG via surface vicinality and identifies how the operation of prospective devices will respond to changes in temperature.
format	article
author	Eduardo B. Guedes Stefan Muff Walber H. Brito Marco Caputo Hang Li Nicholas C. Plumb J. Hugo Dil Milan Radović
author_facet	Eduardo B. Guedes Stefan Muff Walber H. Brito Marco Caputo Hang Li Nicholas C. Plumb J. Hugo Dil Milan Radović
author_sort	Eduardo B. Guedes
title	Universal Structural Influence on the 2D Electron Gas at SrTiO3 Surfaces
title_short	Universal Structural Influence on the 2D Electron Gas at SrTiO3 Surfaces
title_full	Universal Structural Influence on the 2D Electron Gas at SrTiO3 Surfaces
title_fullStr	Universal Structural Influence on the 2D Electron Gas at SrTiO3 Surfaces
title_full_unstemmed	Universal Structural Influence on the 2D Electron Gas at SrTiO3 Surfaces
title_sort	universal structural influence on the 2d electron gas at srtio3 surfaces
publisher	Wiley
publishDate	2021
url	https://doaj.org/article/149d162699614e70879913b916181a65
work_keys_str_mv	AT eduardobguedes universalstructuralinfluenceonthe2delectrongasatsrtio3surfaces AT stefanmuff universalstructuralinfluenceonthe2delectrongasatsrtio3surfaces AT walberhbrito universalstructuralinfluenceonthe2delectrongasatsrtio3surfaces AT marcocaputo universalstructuralinfluenceonthe2delectrongasatsrtio3surfaces AT hangli universalstructuralinfluenceonthe2delectrongasatsrtio3surfaces AT nicholascplumb universalstructuralinfluenceonthe2delectrongasatsrtio3surfaces AT jhugodil universalstructuralinfluenceonthe2delectrongasatsrtio3surfaces AT milanradovic universalstructuralinfluenceonthe2delectrongasatsrtio3surfaces
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Universal Structural Influence on the 2D Electron Gas at SrTiO3 Surfaces

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