Aperiodic quantum oscillations in the two-dimensional electron gas at the LaAlO3/SrTiO3 interface
Despite several attempts, the intimate electronic structure of two-dimensional electron systems buried at the interface between LaAlO 3 and SrTiO 3 still remains to be experimentally revealed. Here, we investigate the transport properties of a high-mobility quasi-two-dimensional electron gas at this...
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| Veröffentlicht in: | npj quantum materials 2020-01, Vol.5 (1), Article 9 |
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| creator | Rubi, Km Gosteau, Julien Serra, Raphaël Han, Kun Zeng, Shengwei Huang, Zhen Warot-Fonrose, Benedicte Arras, Rémi Snoeck, Etienne Ariando Goiran, Michel Escoffier, Walter |
| description | Despite several attempts, the intimate electronic structure of two-dimensional electron systems buried at the interface between LaAlO
3
and SrTiO
3
still remains to be experimentally revealed. Here, we investigate the transport properties of a high-mobility quasi-two-dimensional electron gas at this interface under high magnetic field (55 T) and provide new insights for electronic band structure by analyzing the Shubnikov-de Haas oscillations. Interestingly, the quantum oscillations are not 1∕
B
-periodic and produce a highly non-linear Landau plot (Landau level index versus 1/
B
). We explore different scenarios leading to 1/
B
-aperiodic oscillations where the charge and the chemical potential vary as the magnetic field increases. Overall, the magneto-transport data are discussed in light of high-resolution scanning transmission electron microscopy (HRSTEM) analysis of the interface as well as calculations from density functional theory. |
| doi_str_mv | 10.1038/s41535-020-0210-z |
| format | Article |
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3
and SrTiO
3
still remains to be experimentally revealed. Here, we investigate the transport properties of a high-mobility quasi-two-dimensional electron gas at this interface under high magnetic field (55 T) and provide new insights for electronic band structure by analyzing the Shubnikov-de Haas oscillations. Interestingly, the quantum oscillations are not 1∕
B
-periodic and produce a highly non-linear Landau plot (Landau level index versus 1/
B
). We explore different scenarios leading to 1/
B
-aperiodic oscillations where the charge and the chemical potential vary as the magnetic field increases. Overall, the magneto-transport data are discussed in light of high-resolution scanning transmission electron microscopy (HRSTEM) analysis of the interface as well as calculations from density functional theory.</description><identifier>ISSN: 2397-4648</identifier><identifier>EISSN: 2397-4648</identifier><identifier>DOI: 10.1038/s41535-020-0210-z</identifier><language>eng</language><publisher>London: Nature Publishing Group UK</publisher><subject>639/301/1005/1007 ; 639/301/119/544 ; 639/766/119/544 ; Buried structures ; Chemical potential ; Condensed Matter ; Condensed Matter Physics ; Density functional theory ; Electron gas ; Electronic structure ; Magnetic fields ; Materials Science ; Oscillations ; Physics ; Physics and Astronomy ; Quantum Physics ; Scanning transmission electron microscopy ; Strontium titanates ; Structural Materials ; Surfaces and Interfaces ; Thin Films ; Transport properties</subject><ispartof>npj quantum materials, 2020-01, Vol.5 (1), Article 9</ispartof><rights>The Author(s) 2020</rights><rights>This work is published under http://creativecommons.org/licenses/by/4.0/ (the “License”). Notwithstanding the ProQuest Terms and Conditions, you may use this content in accordance with the terms of the License.</rights><rights>The Author(s) 2020. This work is published under http://creativecommons.org/licenses/by/4.0/ (the “License”). Notwithstanding the ProQuest Terms and Conditions, you may use this content in accordance with the terms of the License.</rights><rights>Distributed under a Creative Commons Attribution 4.0 International License</rights><lds50>peer_reviewed</lds50><oa>free_for_read</oa><woscitedreferencessubscribed>false</woscitedreferencessubscribed><citedby>FETCH-LOGICAL-c421t-6d01025b71cf1a4a781b4937f5a2fa0d56aba4cec8244eed25ca2549f30854ba3</citedby><cites>FETCH-LOGICAL-c421t-6d01025b71cf1a4a781b4937f5a2fa0d56aba4cec8244eed25ca2549f30854ba3</cites><orcidid>0000-0003-1496-8218 ; 0000-0001-9829-9431 ; 0000-0002-1735-0942 ; 0000-0001-6652-0576</orcidid></display><links><openurl>$$Topenurl_article</openurl><openurlfulltext>$$Topenurlfull_article</openurlfulltext><thumbnail>$$Tsyndetics_thumb_exl</thumbnail><linktopdf>$$Uhttps://link.springer.com/content/pdf/10.1038/s41535-020-0210-z$$EPDF$$P50$$Gspringer$$Hfree_for_read</linktopdf><linktohtml>$$Uhttps://doi.org/10.1038/s41535-020-0210-z$$EHTML$$P50$$Gspringer$$Hfree_for_read</linktohtml><link.rule.ids>230,314,780,784,864,885,27924,27925,41120,42189,51576</link.rule.ids><backlink>$$Uhttps://hal.science/hal-02988958$$DView record in HAL$$Hfree_for_read</backlink></links><search><creatorcontrib>Rubi, Km</creatorcontrib><creatorcontrib>Gosteau, Julien</creatorcontrib><creatorcontrib>Serra, Raphaël</creatorcontrib><creatorcontrib>Han, Kun</creatorcontrib><creatorcontrib>Zeng, Shengwei</creatorcontrib><creatorcontrib>Huang, Zhen</creatorcontrib><creatorcontrib>Warot-Fonrose, Benedicte</creatorcontrib><creatorcontrib>Arras, Rémi</creatorcontrib><creatorcontrib>Snoeck, Etienne</creatorcontrib><creatorcontrib>Ariando</creatorcontrib><creatorcontrib>Goiran, Michel</creatorcontrib><creatorcontrib>Escoffier, Walter</creatorcontrib><title>Aperiodic quantum oscillations in the two-dimensional electron gas at the LaAlO3/SrTiO3 interface</title><title>npj quantum materials</title><addtitle>npj Quantum Mater</addtitle><description>Despite several attempts, the intimate electronic structure of two-dimensional electron systems buried at the interface between LaAlO
3
and SrTiO
3
still remains to be experimentally revealed. Here, we investigate the transport properties of a high-mobility quasi-two-dimensional electron gas at this interface under high magnetic field (55 T) and provide new insights for electronic band structure by analyzing the Shubnikov-de Haas oscillations. Interestingly, the quantum oscillations are not 1∕
B
-periodic and produce a highly non-linear Landau plot (Landau level index versus 1/
B
). We explore different scenarios leading to 1/
B
-aperiodic oscillations where the charge and the chemical potential vary as the magnetic field increases. Overall, the magneto-transport data are discussed in light of high-resolution scanning transmission electron microscopy (HRSTEM) analysis of the interface as well as calculations from density functional theory.</description><subject>639/301/1005/1007</subject><subject>639/301/119/544</subject><subject>639/766/119/544</subject><subject>Buried structures</subject><subject>Chemical potential</subject><subject>Condensed Matter</subject><subject>Condensed Matter Physics</subject><subject>Density functional theory</subject><subject>Electron gas</subject><subject>Electronic structure</subject><subject>Magnetic fields</subject><subject>Materials Science</subject><subject>Oscillations</subject><subject>Physics</subject><subject>Physics and Astronomy</subject><subject>Quantum Physics</subject><subject>Scanning transmission electron microscopy</subject><subject>Strontium titanates</subject><subject>Structural Materials</subject><subject>Surfaces and Interfaces</subject><subject>Thin Films</subject><subject>Transport properties</subject><issn>2397-4648</issn><issn>2397-4648</issn><fulltext>true</fulltext><rsrctype>article</rsrctype><creationdate>2020</creationdate><recordtype>article</recordtype><sourceid>C6C</sourceid><sourceid>ABUWG</sourceid><sourceid>AFKRA</sourceid><sourceid>AZQEC</sourceid><sourceid>BENPR</sourceid><sourceid>CCPQU</sourceid><sourceid>DWQXO</sourceid><recordid>eNp9kU9Lw0AQxYMoWGo_gLeAJw-x-zfZHEtRKxR6sJ6XyWbTbkmz7e5WsZ_erRH1oodhhuH35jG8JLnG6A4jKsaeYU55hgiKhVF2PEsGhJZFxnImzn_Nl8nI-w1CkcKC5fkggclOO2Nro9L9Abpw2KbWK9O2EIztfGq6NKx1Gt5sVput7nzcQpvqVqvgbJeuwKcQPpk5TNoFHT-7pVnQKAzaNaD0VXLRQOv16KsPk5eH--V0ls0Xj0_TyTxTjOCQ5TXCiPCqwKrBwKAQuGIlLRoOpAFU8xwqYEorQRjTuiZcAeGsbCgSnFVAh8ltf3cNrdw5swX3Li0YOZvM5WmHSClEycUrjuxNz-6c3R-0D3JjDy4-5iVhQhRFTgn9l6KRyTHBJFK4p5Sz3jvdfJtjJE_xyD6e6I_kKR55jBrSa3xku5V2P5f_Fn0AB8ORFA</recordid><startdate>20200130</startdate><enddate>20200130</enddate><creator>Rubi, Km</creator><creator>Gosteau, Julien</creator><creator>Serra, Raphaël</creator><creator>Han, Kun</creator><creator>Zeng, Shengwei</creator><creator>Huang, Zhen</creator><creator>Warot-Fonrose, Benedicte</creator><creator>Arras, Rémi</creator><creator>Snoeck, Etienne</creator><creator>Ariando</creator><creator>Goiran, Michel</creator><creator>Escoffier, Walter</creator><general>Nature Publishing Group UK</general><general>Nature Publishing Group</general><general>Nature publishing</general><scope>C6C</scope><scope>AAYXX</scope><scope>CITATION</scope><scope>8FE</scope><scope>8FG</scope><scope>ABJCF</scope><scope>ABUWG</scope><scope>AFKRA</scope><scope>ARAPS</scope><scope>AZQEC</scope><scope>BENPR</scope><scope>BGLVJ</scope><scope>CCPQU</scope><scope>D1I</scope><scope>DWQXO</scope><scope>HCIFZ</scope><scope>KB.</scope><scope>P5Z</scope><scope>P62</scope><scope>PDBOC</scope><scope>PIMPY</scope><scope>PQEST</scope><scope>PQQKQ</scope><scope>PQUKI</scope><scope>PRINS</scope><scope>1XC</scope><scope>VOOES</scope><orcidid>https://orcid.org/0000-0003-1496-8218</orcidid><orcidid>https://orcid.org/0000-0001-9829-9431</orcidid><orcidid>https://orcid.org/0000-0002-1735-0942</orcidid><orcidid>https://orcid.org/0000-0001-6652-0576</orcidid></search><sort><creationdate>20200130</creationdate><title>Aperiodic quantum oscillations in the two-dimensional electron gas at the LaAlO3/SrTiO3 interface</title><author>Rubi, Km ; 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3
and SrTiO
3
still remains to be experimentally revealed. Here, we investigate the transport properties of a high-mobility quasi-two-dimensional electron gas at this interface under high magnetic field (55 T) and provide new insights for electronic band structure by analyzing the Shubnikov-de Haas oscillations. Interestingly, the quantum oscillations are not 1∕
B
-periodic and produce a highly non-linear Landau plot (Landau level index versus 1/
B
). We explore different scenarios leading to 1/
B
-aperiodic oscillations where the charge and the chemical potential vary as the magnetic field increases. Overall, the magneto-transport data are discussed in light of high-resolution scanning transmission electron microscopy (HRSTEM) analysis of the interface as well as calculations from density functional theory.</abstract><cop>London</cop><pub>Nature Publishing Group UK</pub><doi>10.1038/s41535-020-0210-z</doi><orcidid>https://orcid.org/0000-0003-1496-8218</orcidid><orcidid>https://orcid.org/0000-0001-9829-9431</orcidid><orcidid>https://orcid.org/0000-0002-1735-0942</orcidid><orcidid>https://orcid.org/0000-0001-6652-0576</orcidid><oa>free_for_read</oa></addata></record> |
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| subjects | 639/301/1005/1007 639/301/119/544 639/766/119/544 Buried structures Chemical potential Condensed Matter Condensed Matter Physics Density functional theory Electron gas Electronic structure Magnetic fields Materials Science Oscillations Physics Physics and Astronomy Quantum Physics Scanning transmission electron microscopy Strontium titanates Structural Materials Surfaces and Interfaces Thin Films Transport properties |
| title | Aperiodic quantum oscillations in the two-dimensional electron gas at the LaAlO3/SrTiO3 interface |
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