Non-BCS-type superconductivity and critical thickness of SrTiO3/LaAlO3/SrTiO3 trilayer interface system
DC Field | Value | Language |
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dc.contributor.author | Kwak, Yongsu | - |
dc.contributor.author | Han, Woojoo | - |
dc.contributor.author | Ngo, Thach D. N. | - |
dc.contributor.author | Odkhuu, Dorj | - |
dc.contributor.author | Kim, Young Heon | - |
dc.contributor.author | Rhim, Sonny H. | - |
dc.contributor.author | Choi, Mahn-Soo | - |
dc.contributor.author | Doh, Yong-Joo | - |
dc.contributor.author | Lee, Joon Sung | - |
dc.contributor.author | Song, Jonghyun | - |
dc.contributor.author | Kim, Jinhee | - |
dc.date.accessioned | 2022-02-14T23:41:24Z | - |
dc.date.available | 2022-02-14T23:41:24Z | - |
dc.date.issued | 2021-11-01 | - |
dc.identifier.issn | 0169-4332 | - |
dc.identifier.issn | 1873-5584 | - |
dc.identifier.uri | https://scholar.korea.ac.kr/handle/2021.sw.korea/135799 | - |
dc.description.abstract | As a quest for two-dimensional conducting interface with exotic functionalities for future electronic devices, the perovskite heterointerface of LaAlO3/SrTiO3 (LAO/STO) has been intensively studied. For the LAO/STO heterostructure, the critical thickness of the LAO layer for metallic conduction is 4 unit cells (uc) according to the polar catastrophe scenario. However, we find that metallic conduction can also be induced at the LAO/STO interface with only 1 uc of LAO, as long as it is capped by 3 or more uc of STO. Consistent results are obtained from density functional theory calculations. For this STO/LAO/STO trilayer, we also confirmed a peculiar nonBCS-type superconductivity with a suppressed superconducting gap, which may imply a superconducting coupling distinct from previously reported BCS-type superconductivity in LAO/STO heterointerface. These observations suggest that the STO/LAO/STO trilayer can be another testing board to explore carrier conduction in two-dimensional electron systems for electronic device applications utilizing exotic functionalities. | - |
dc.language | 영어 | - |
dc.language.iso | ENG | - |
dc.publisher | ELSEVIER | - |
dc.title | Non-BCS-type superconductivity and critical thickness of SrTiO3/LaAlO3/SrTiO3 trilayer interface system | - |
dc.type | Article | - |
dc.publisher.location | 네덜란드 | - |
dc.identifier.doi | 10.1016/j.apsusc.2021.150495 | - |
dc.identifier.wosid | 000681144100005 | - |
dc.identifier.bibliographicCitation | APPLIED SURFACE SCIENCE, v.565 | - |
dc.citation.title | APPLIED SURFACE SCIENCE | - |
dc.citation.volume | 565 | - |
dc.type.docType | Article | - |
dc.description.isOpenAccess | N | - |
dc.description.journalRegisteredClass | scie | - |
dc.description.journalRegisteredClass | scopus | - |
dc.relation.journalResearchArea | Chemistry | - |
dc.relation.journalResearchArea | Materials Science | - |
dc.relation.journalResearchArea | Physics | - |
dc.relation.journalWebOfScienceCategory | Chemistry, Physical | - |
dc.relation.journalWebOfScienceCategory | Materials Science, Coatings & Films | - |
dc.relation.journalWebOfScienceCategory | Physics, Applied | - |
dc.relation.journalWebOfScienceCategory | Physics, Condensed Matter | - |
dc.subject.keywordPlus | AB-INITIO | - |
dc.subject.keywordAuthor | SrTiO3-capped LaAlO 3 | - |
dc.subject.keywordAuthor | SrTiO 3 or SrTiO 3 | - |
dc.subject.keywordAuthor | LaAlO3 | - |
dc.subject.keywordAuthor | SrTiO 3 trilayer | - |
dc.subject.keywordAuthor | Critical thickness | - |
dc.subject.keywordAuthor | two-dimensional electron gas (2DEG) | - |
dc.subject.keywordAuthor | Superconductivity | - |
dc.subject.keywordAuthor | Non-BCS-type | - |
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