BaBiO3—From single crystals towards oxide topological insulators
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| Názov: | BaBiO3—From single crystals towards oxide topological insulators |
|---|---|
| Autori: | Bouwmeester, Rosa Luca, Brinkman, A. |
| Zdroj: | Reviews in Physics. 6 |
| Informácie o vydavateľovi: | Elsevier BV, 2021. |
| Rok vydania: | 2021 |
| Predmety: | Topological insulator, Thin films, Breathing mode, UT-Hybrid-D, Single crystals, Complex oxide, Perovskite, BaBiO3 |
| Popis: | BaBiO3 is an oxide perovskite with a wide variety of interesting properties. It was expected that the compound would behave like a metal. However, experiments revealed that BaBiO3 is not metallic, which started an extensive debate about the mechanism responsible for this insulating behavior. The two most important conjectures in this debate are charge disproportionation of the Bi ion into 3+ and 5+ cations and bond hybridization of the Bi 6s and O 2p orbitals. Both mechanisms induce a breathing mode of the oxygen octahedra, which is experimentally observed in single crystals and thin films. Recently, ultra-thin BaBiO3 films were studied with the aim of suppressing the breathing mode, which was expected to result in re-emergence of metallicity. However, this expectation was not confirmed so far. Furthermore, theoretical calculations predict that BaBiO3 becomes a topological insulator (TI) when doped with electrons. Since high-temperature superconductivity was observed when doping the compound with holes, an interface between a superconductor and a TI can be established within the same parent compound. In this Review, we discuss the theoretical and experimental findings concerning the mechanism responsible for the unexpected insulating behavior of BaBiO3 for both single crystals and thin films. An overview is given of the current state of the art and the experimental challenges of achieving an oxide topological insulating state in BaBiO3. |
| Druh dokumentu: | Review |
| Jazyk: | English |
| ISSN: | 2405-4283 |
| DOI: | 10.1016/j.revip.2021.100056 |
| Prístupová URL adresa: | https://research.utwente.nl/en/publications/4076cef0-3c8f-45b4-b1f1-169d366a8829 |
| Prístupové číslo: | edsair.dris...02403..81e751c27a07c07f25d4563548f43be1 |
| Databáza: | OpenAIRE |
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| Items | – Name: Title Label: Title Group: Ti Data: BaBiO3—From single crystals towards oxide topological insulators – Name: Author Label: Authors Group: Au Data: <searchLink fieldCode="AR" term="%22Bouwmeester%2C+Rosa+Luca%22">Bouwmeester, Rosa Luca</searchLink><br /><searchLink fieldCode="AR" term="%22Brinkman%2C+A%2E%22">Brinkman, A.</searchLink> – Name: TitleSource Label: Source Group: Src Data: <i>Reviews in Physics</i>. 6 – Name: Publisher Label: Publisher Information Group: PubInfo Data: Elsevier BV, 2021. – Name: DatePubCY Label: Publication Year Group: Date Data: 2021 – Name: Subject Label: Subject Terms Group: Su Data: <searchLink fieldCode="DE" term="%22Topological+insulator%22">Topological insulator</searchLink><br /><searchLink fieldCode="DE" term="%22Thin+films%22">Thin films</searchLink><br /><searchLink fieldCode="DE" term="%22Breathing+mode%22">Breathing mode</searchLink><br /><searchLink fieldCode="DE" term="%22UT-Hybrid-D%22">UT-Hybrid-D</searchLink><br /><searchLink fieldCode="DE" term="%22Single+crystals%22">Single crystals</searchLink><br /><searchLink fieldCode="DE" term="%22Complex+oxide%22">Complex oxide</searchLink><br /><searchLink fieldCode="DE" term="%22Perovskite%22">Perovskite</searchLink><br /><searchLink fieldCode="DE" term="%22BaBiO3%22">BaBiO3</searchLink> – Name: Abstract Label: Description Group: Ab Data: BaBiO3 is an oxide perovskite with a wide variety of interesting properties. It was expected that the compound would behave like a metal. However, experiments revealed that BaBiO3 is not metallic, which started an extensive debate about the mechanism responsible for this insulating behavior. The two most important conjectures in this debate are charge disproportionation of the Bi ion into 3+ and 5+ cations and bond hybridization of the Bi 6s and O 2p orbitals. Both mechanisms induce a breathing mode of the oxygen octahedra, which is experimentally observed in single crystals and thin films. Recently, ultra-thin BaBiO3 films were studied with the aim of suppressing the breathing mode, which was expected to result in re-emergence of metallicity. However, this expectation was not confirmed so far. Furthermore, theoretical calculations predict that BaBiO3 becomes a topological insulator (TI) when doped with electrons. Since high-temperature superconductivity was observed when doping the compound with holes, an interface between a superconductor and a TI can be established within the same parent compound. In this Review, we discuss the theoretical and experimental findings concerning the mechanism responsible for the unexpected insulating behavior of BaBiO3 for both single crystals and thin films. An overview is given of the current state of the art and the experimental challenges of achieving an oxide topological insulating state in BaBiO3. – Name: TypeDocument Label: Document Type Group: TypDoc Data: Review – Name: Language Label: Language Group: Lang Data: English – Name: ISSN Label: ISSN Group: ISSN Data: 2405-4283 – Name: DOI Label: DOI Group: ID Data: 10.1016/j.revip.2021.100056 – Name: URL Label: Access URL Group: URL Data: <link linkTarget="URL" linkTerm="https://research.utwente.nl/en/publications/4076cef0-3c8f-45b4-b1f1-169d366a8829" linkWindow="_blank">https://research.utwente.nl/en/publications/4076cef0-3c8f-45b4-b1f1-169d366a8829</link> – Name: AN Label: Accession Number Group: ID Data: edsair.dris...02403..81e751c27a07c07f25d4563548f43be1 |
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| RecordInfo | BibRecord: BibEntity: Identifiers: – Type: doi Value: 10.1016/j.revip.2021.100056 Languages: – Text: English Subjects: – SubjectFull: Topological insulator Type: general – SubjectFull: Thin films Type: general – SubjectFull: Breathing mode Type: general – SubjectFull: UT-Hybrid-D Type: general – SubjectFull: Single crystals Type: general – SubjectFull: Complex oxide Type: general – SubjectFull: Perovskite Type: general – SubjectFull: BaBiO3 Type: general Titles: – TitleFull: BaBiO3—From single crystals towards oxide topological insulators Type: main BibRelationships: HasContributorRelationships: – PersonEntity: Name: NameFull: Bouwmeester, Rosa Luca – PersonEntity: Name: NameFull: Brinkman, A. IsPartOfRelationships: – BibEntity: Dates: – D: 04 M: 06 Type: published Y: 2021 Identifiers: – Type: issn-print Value: 24054283 – Type: issn-locals Value: edsair – Type: issn-locals Value: edsairFT Numbering: – Type: volume Value: 6 Titles: – TitleFull: Reviews in Physics Type: main |
| ResultId | 1 |
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