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Yoo, Jung-Woo
Nano Spin Transport Lab.
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dc.citation.endPage 715 -
dc.citation.number 2 -
dc.citation.startPage 708 -
dc.citation.title NANOSCALE -
dc.citation.volume 13 -
dc.contributor.author Sohn, Woonbae -
dc.contributor.author Kim, Taemin Ludvic -
dc.contributor.author Lee, Tae Hyung -
dc.contributor.author Lee, Kyeongpung -
dc.contributor.author Yoon, Sangmoon -
dc.contributor.author Kim, Chungsoo -
dc.contributor.author Han, Seungwu -
dc.contributor.author Yoo, Jung-Woo -
dc.contributor.author Roh, Kwang Chul -
dc.contributor.author Kim, Miyoung -
dc.contributor.author Jang, Ho Won -
dc.date.accessioned 2023-12-21T16:36:40Z -
dc.date.available 2023-12-21T16:36:40Z -
dc.date.created 2020-12-17 -
dc.date.issued 2021-01 -
dc.description.abstract A quasi 2-dimensional electron gas (2DEG) evolved at the LaAlO3 (LAO)/SrTiO3 (STO) interface has attracted significant attention, since the insertion of perovskite titanates can tune the 2DEG conductivity. However, this depends on the Ti-O-Ti bonding angle and structural symmetry. In this study, we controlled the octahedral tilt of the LAO/CaTiO3 (CTO) interface by heterostructuring it with CTO grown on STO substrates of various thicknesses. The 2DEG was maintained when the thickness of the CTO was below the critical thickness of 5 unit cells (uc); however, it was suppressed when the CTO was above this critical thickness. High-angle annular dark field (HAADF) scanning transmission electron microscopy (STEM) combined with integrated differential phase contrast (iDPC) STEM imaging were used to visualize the TiO6 octahedral tilt propagation and symmetry of the 5 uc and 24 uc CTO film. The symmetry of the 5 uc CTO film resembled that of the STO substrate, whereas the octahedral tilt propagated in the 24 uc CTO film due to the structural relaxation. These results show that the interface engineering of the octahedral tilt can enable or suppress the formation of 2DEG in the perovskite oxides. -
dc.identifier.bibliographicCitation NANOSCALE, v.13, no.2, pp.708 - 715 -
dc.identifier.doi 10.1039/D0NR07545K -
dc.identifier.issn 2040-3364 -
dc.identifier.scopusid 2-s2.0-85099782241 -
dc.identifier.uri https://scholarworks.unist.ac.kr/handle/201301/49009 -
dc.identifier.url https://pubs.rsc.org/en/content/articlelanding/2020/nr/d0nr07545k#!divAbstract -
dc.identifier.wosid 000610368100017 -
dc.language 영어 -
dc.publisher Royal Society of Chemistry -
dc.title Suppression of metal to insulator transition using strong interfacial coupling at cubic and orthorhombic perovskite oxide heterointerface -
dc.type Article -
dc.description.isOpenAccess FALSE -
dc.relation.journalWebOfScienceCategory Chemistry; Science & Technology - Other Topics; Materials Science; Physics -
dc.relation.journalResearchArea Chemistry, Multidisciplinary; Nanoscience & Nanotechnology; Materials Science, Multidisciplinary; Physics, Applied -
dc.type.docType Article -
dc.description.journalRegisteredClass scie -
dc.description.journalRegisteredClass scopus -

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