Two-dimensional electron gas with universal subbands at the surface of SrTiO 3
As silicon is the basis of conventional electronics, so strontium titanate (SrTiO3) is the foundation of the emerging field of oxide electronics1,2. SrTiO3 is the preferred template for the creation of exotic, two-dimensional (2D) phases of electron matter at oxide interfaces3-5 that have metalg-ins...
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| Otros Autores: | , , , , , , , , , , , , , , , , |
| Formato: | Capítulo de libro |
| Lenguaje: | Inglés |
| Publicado: |
Nature Publishing Group
2011
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| Acceso en línea: | Registro en Scopus DOI Handle Registro en la Biblioteca Digital |
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| LEADER | 10445caa a22012737a 4500 | ||
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| 001 | PAPER-10863 | ||
| 003 | AR-BaUEN | ||
| 005 | 20241009122136.0 | ||
| 008 | 190411s2011 xx ||||fo|||| 00| 0 eng|d | ||
| 024 | 7 | |2 scopus |a 2-s2.0-78651386054 | |
| 024 | 7 | |2 cas |a strontium, 7440-24-6; titanium dioxide, 1317-70-0, 1317-80-2, 13463-67-7, 51745-87-0 | |
| 030 | |a NATUA | ||
| 040 | |a Scopus |b spa |c AR-BaUEN |d AR-BaUEN | ||
| 100 | 1 | |a Santander-Syro, A.F. | |
| 245 | 1 | 0 | |a Two-dimensional electron gas with universal subbands at the surface of SrTiO 3 |
| 260 | |b Nature Publishing Group |c 2011 | ||
| 270 | 1 | 0 | |m Santander-Syro, A. F.; CSNSM, CNRS/IN2P3, Université Paris-Sud, Bâtiments 104 et 108, 91405 Orsay cedex, France; email: andres.santander@csnsm.in2p3.fr |
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| 506 | |2 openaire |e Política editorial | ||
| 520 | 3 | |a As silicon is the basis of conventional electronics, so strontium titanate (SrTiO3) is the foundation of the emerging field of oxide electronics1,2. SrTiO3 is the preferred template for the creation of exotic, two-dimensional (2D) phases of electron matter at oxide interfaces3-5 that have metalg-insulator transitions6,7, superconductivity8,9 or large negative magnetoresistance 10. However, the physical nature of the electronic structure underlying these 2D electron gases (2DEGs), which is crucial to understanding their remarkable properties11,12, remains elusive. Here we show, using angle-resolved photoemission spectroscopy, that there is a highly metallic universal 2DEG at the vacuum-cleaved surface of SrTiO3 (including the non-doped insulating material) independently of bulk carrier densities over more than seven decades. This 2DEG is confined within a region of about five unit cells and has a sheet carrier density of ∼0.33 electrons per square lattice parameter. The electronic structure consists of multiple subbands of heavy and light electrons. The similarity of this 2DEG to those reported in SrTiO3-based heterostructures and field-effect transistors suggests that different forms of electron confinement at the surface of SrTiO3 lead to essentially the same 2DEG. Our discovery provides a model system for the study of the electronic structure of 2DEGs in SrTiO3-based devices and a novel means of generating 2DEGs at the surfaces of transition-metal oxides. © 2011 Macmillan Publishers Limited. All rights reserved. |l eng | |
| 593 | |a CSNSM, CNRS/IN2P3, Université Paris-Sud, Bâtiments 104 et 108, 91405 Orsay cedex, France | ||
| 593 | |a Laboratoire Physique et Etude des Matériaux, UMR 8213 ESPCI-CNRS-UPMC, 10 rue Vauquelin, 75231 Paris cedex 5, France | ||
| 593 | |a Unité Mixte de Physique CNRS/Thales, Campus de l'Ecole Polytechnique, 1 Avenue A. Fresnel, 91767 Palaiseau, France | ||
| 593 | |a Université Paris-Sud, 91405 Orsay, France | ||
| 593 | |a Universität Würzburg, Experimentelle Physik VII, 97074 Würzburg, Germany | ||
| 593 | |a Ames Laboratory, Department of Physics and Astronomy, Iowa State University, Ames, IA 50011, United States | ||
| 593 | |a Laboratoire Léon Brillouin, CEA-CNRS, CEA-Saclay, 91191 Gif-sur-Yvette, France | ||
| 593 | |a Gerencia de Investigación y Aplicaciones, Comisión Nacional de Energía Atómica, Avenida General Paz y Constituyentes, 1650 San Martín, Argentina | ||
| 593 | |a Instituto Sábato, Universidad Nacional de San Martín - CNEA, 1650 San Martín, Argentina | ||
| 593 | |a Institute of Physics, National Laboratory for Condensed Matter Physics, Chinese Academy of Sciences, Zhongguancun nansanjie 8, Beijing 100190, China | ||
| 593 | |a Synchrotron SOLEIL, CNRS-CEA, l'Orme des Merisiers, Saint-Aubin-BP48, 91192 Gif-sur-Yvette, France | ||
| 593 | |a Institut de Ciència de Materials de Barcelona, ICMAB-CSIC, Campus de la UAB, 08193 Bellaterra, Catalonia, Spain | ||
| 593 | |a Institut d'Electronique Fondamentale, Université Paris-Sud, Bâtiment 220, 91405 Orsay, France | ||
| 593 | |a Laboratoire de Physique des Solides, Université Paris-Sud, Bâtiment 510, 91405 Orsay, France | ||
| 593 | |a Departamento de Física, FCEN-UBA, Ciudad Universitaria, Pabellón 1, Buenos Aires (1428), Argentina | ||
| 690 | 1 | 0 | |a METAL OXIDE |
| 690 | 1 | 0 | |a STRONTIUM |
| 690 | 1 | 0 | |a TITANIUM DIOXIDE |
| 690 | 1 | 0 | |a ELECTRON |
| 690 | 1 | 0 | |a GAS |
| 690 | 1 | 0 | |a INSULATION |
| 690 | 1 | 0 | |a NUMERICAL MODEL |
| 690 | 1 | 0 | |a OXIDE |
| 690 | 1 | 0 | |a SILICON |
| 690 | 1 | 0 | |a SPECTROSCOPY |
| 690 | 1 | 0 | |a TWO-DIMENSIONAL MODELING |
| 690 | 1 | 0 | |a ARTICLE |
| 690 | 1 | 0 | |a CONDUCTANCE |
| 690 | 1 | 0 | |a ELECTRON |
| 690 | 1 | 0 | |a ELECTRONICS |
| 690 | 1 | 0 | |a ENERGY |
| 690 | 1 | 0 | |a GAS |
| 690 | 1 | 0 | |a PRIORITY JOURNAL |
| 690 | 1 | 0 | |a SPECTROSCOPY |
| 690 | 1 | 0 | |a SUPERCONDUCTOR |
| 700 | 1 | |a Copie, O. | |
| 700 | 1 | |a Kondo, T. | |
| 700 | 1 | |a Fortuna, F. | |
| 700 | 1 | |a Pailhés, S. | |
| 700 | 1 | |a Weht, Rubén Oscar | |
| 700 | 1 | |a Qiu, X.G. | |
| 700 | 1 | |a Bertran, F. | |
| 700 | 1 | |a Nicolaou, A. | |
| 700 | 1 | |a Taleb-Ibrahimi, A. | |
| 700 | 1 | |a Le F́vre, P. | |
| 700 | 1 | |a Herranz, G. | |
| 700 | 1 | |a Bibes, M. | |
| 700 | 1 | |a Reyren, N. | |
| 700 | 1 | |a Apertet, Y. | |
| 700 | 1 | |a Lecoeur, P. | |
| 700 | 1 | |a Barthélémy, A. | |
| 700 | 1 | |a Rozenberg, M.J. | |
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