Electronic band structure of superconducting KTaO3 (111) interfaces
Two-dimensional electron gases (2DEGs) based on KTaO3 are emerging as a promising platform for spin-orbitronics due to their high Rashba spin–orbit coupling (SOC) and gate-voltage tunability. The recent discovery of a superconducting state in KTaO3 2DEGs now expands their potential towards topologic...
| Main Authors: | , , , , , , , , , , , , , , , , , , , |
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| Format: | Article |
| Language: | English |
| Published: |
AIP Publishing LLC
2023-12-01
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| Series: | APL Materials |
| Online Access: | http://dx.doi.org/10.1063/5.0169750 |
| _version_ | 1827391520211206144 |
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| author | Srijani Mallik Börge Göbel Hugo Witt Luis M. Vicente-Arche Sara Varotto Julien Bréhin Gerbold Ménard Guilhem Saïz Dyhia Tamsaout Andrés Felipe Santander-Syro Franck Fortuna François Bertran Patrick Le Fèvre Julien Rault Isabella Boventer Ingrid Mertig Agnès Barthélémy Nicolas Bergeal Annika Johansson Manuel Bibes |
| author_facet | Srijani Mallik Börge Göbel Hugo Witt Luis M. Vicente-Arche Sara Varotto Julien Bréhin Gerbold Ménard Guilhem Saïz Dyhia Tamsaout Andrés Felipe Santander-Syro Franck Fortuna François Bertran Patrick Le Fèvre Julien Rault Isabella Boventer Ingrid Mertig Agnès Barthélémy Nicolas Bergeal Annika Johansson Manuel Bibes |
| author_sort | Srijani Mallik |
| collection | DOAJ |
| description | Two-dimensional electron gases (2DEGs) based on KTaO3 are emerging as a promising platform for spin-orbitronics due to their high Rashba spin–orbit coupling (SOC) and gate-voltage tunability. The recent discovery of a superconducting state in KTaO3 2DEGs now expands their potential towards topological superconductivity. Although the band structure of KTaO3 surfaces of various crystallographic orientations has already been mapped using angle-resolved photoemission spectroscopy (ARPES), this is not the case for superconducting KTaO3 2DEGs. Here, we reveal the electronic structure of superconducting 2DEGs based on KTaO3 (111) single crystals through ARPES measurements. We fit the data with a tight-binding model and compute the associated spin textures to bring insight into the SOC-driven physics of this fascinating system. |
| first_indexed | 2024-03-08T17:12:15Z |
| format | Article |
| id | doaj.art-cd1bc6ad846b472d9fe6a2a14dfd09cf |
| institution | Directory Open Access Journal |
| issn | 2166-532X |
| language | English |
| last_indexed | 2024-03-08T17:12:15Z |
| publishDate | 2023-12-01 |
| publisher | AIP Publishing LLC |
| record_format | Article |
| series | APL Materials |
| spelling | doaj.art-cd1bc6ad846b472d9fe6a2a14dfd09cf2024-01-03T19:56:07ZengAIP Publishing LLCAPL Materials2166-532X2023-12-011112121108121108-910.1063/5.0169750Electronic band structure of superconducting KTaO3 (111) interfacesSrijani Mallik0Börge Göbel1Hugo Witt2Luis M. Vicente-Arche3Sara Varotto4Julien Bréhin5Gerbold Ménard6Guilhem Saïz7Dyhia Tamsaout8Andrés Felipe Santander-Syro9Franck Fortuna10François Bertran11Patrick Le Fèvre12Julien Rault13Isabella Boventer14Ingrid Mertig15Agnès Barthélémy16Nicolas Bergeal17Annika Johansson18Manuel Bibes19Unité Mixte de Physique, CNRS, Thales, Université Paris-Saclay, 91767 Palaiseau, FranceInstitut für Physik, Martin-Luther-Universität Halle-Wittenberg, 06099 Halle, GermanyUnité Mixte de Physique, CNRS, Thales, Université Paris-Saclay, 91767 Palaiseau, FranceUnité Mixte de Physique, CNRS, Thales, Université Paris-Saclay, 91767 Palaiseau, FranceUnité Mixte de Physique, CNRS, Thales, Université Paris-Saclay, 91767 Palaiseau, FranceUnité Mixte de Physique, CNRS, Thales, Université Paris-Saclay, 91767 Palaiseau, FranceLaboratoire de Physique et d’Etude des Matériaux, ESPCI Paris, Université PSL, CNRS, 75005 Paris, FranceLaboratoire de Physique et d’Etude des Matériaux, ESPCI Paris, Université PSL, CNRS, 75005 Paris, FranceUnité Mixte de Physique, CNRS, Thales, Université Paris-Saclay, 91767 Palaiseau, FranceInstitut des Sciences Moléculaires d’Orsay, CNRS, Université Paris-Saclay, 91405 Orsay, FranceInstitut des Sciences Moléculaires d’Orsay, CNRS, Université Paris-Saclay, 91405 Orsay, FranceSOLEIL Synchrotron, L’Orme des Merisiers, Départementale 128, F-91190 Saint-Aubin, FranceSOLEIL Synchrotron, L’Orme des Merisiers, Départementale 128, F-91190 Saint-Aubin, FranceSOLEIL Synchrotron, L’Orme des Merisiers, Départementale 128, F-91190 Saint-Aubin, FranceUnité Mixte de Physique, CNRS, Thales, Université Paris-Saclay, 91767 Palaiseau, FranceInstitut für Physik, Martin-Luther-Universität Halle-Wittenberg, 06099 Halle, GermanyUnité Mixte de Physique, CNRS, Thales, Université Paris-Saclay, 91767 Palaiseau, FranceLaboratoire de Physique et d’Etude des Matériaux, ESPCI Paris, Université PSL, CNRS, 75005 Paris, FranceMax Planck Institute of Microstructure Physics, Weinberg 2, 06120 Halle, GermanyUnité Mixte de Physique, CNRS, Thales, Université Paris-Saclay, 91767 Palaiseau, FranceTwo-dimensional electron gases (2DEGs) based on KTaO3 are emerging as a promising platform for spin-orbitronics due to their high Rashba spin–orbit coupling (SOC) and gate-voltage tunability. The recent discovery of a superconducting state in KTaO3 2DEGs now expands their potential towards topological superconductivity. Although the band structure of KTaO3 surfaces of various crystallographic orientations has already been mapped using angle-resolved photoemission spectroscopy (ARPES), this is not the case for superconducting KTaO3 2DEGs. Here, we reveal the electronic structure of superconducting 2DEGs based on KTaO3 (111) single crystals through ARPES measurements. We fit the data with a tight-binding model and compute the associated spin textures to bring insight into the SOC-driven physics of this fascinating system.http://dx.doi.org/10.1063/5.0169750 |
| spellingShingle | Srijani Mallik Börge Göbel Hugo Witt Luis M. Vicente-Arche Sara Varotto Julien Bréhin Gerbold Ménard Guilhem Saïz Dyhia Tamsaout Andrés Felipe Santander-Syro Franck Fortuna François Bertran Patrick Le Fèvre Julien Rault Isabella Boventer Ingrid Mertig Agnès Barthélémy Nicolas Bergeal Annika Johansson Manuel Bibes Electronic band structure of superconducting KTaO3 (111) interfaces APL Materials |
| title | Electronic band structure of superconducting KTaO3 (111) interfaces |
| title_full | Electronic band structure of superconducting KTaO3 (111) interfaces |
| title_fullStr | Electronic band structure of superconducting KTaO3 (111) interfaces |
| title_full_unstemmed | Electronic band structure of superconducting KTaO3 (111) interfaces |
| title_short | Electronic band structure of superconducting KTaO3 (111) interfaces |
| title_sort | electronic band structure of superconducting ktao3 111 interfaces |
| url | http://dx.doi.org/10.1063/5.0169750 |
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