Observation of bandgap closing in SrxBa1−xBiO3 films: Evidence toward topological order in BaBiO3
Sr x Ba 1 − x BiO 3 ( 0 ≤ x < 0.5) films were fabricated from solution-phase precursors using flow-limited field-injection electrostatic spraying to investigate the predicted topological properties of BaBiO 3, an oxide perovskite. The films were analyzed via x-ray diffraction, optical conductivit...
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| Veröffentlicht in: | Journal of applied physics 2022-07, Vol.132 (1) |
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| container_title | Journal of applied physics |
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| creator | Vesto, Riley Choi, Hyungsoo Kim, Kyekyoon |
| description | Sr
x
Ba
1
−
x
BiO
3 (
0
≤
x
<
0.5) films were fabricated from solution-phase precursors using flow-limited field-injection electrostatic spraying to investigate the predicted topological properties of
BaBiO
3, an oxide perovskite. The films were analyzed via x-ray diffraction, optical conductivity, and Raman spectroscopy. The bandgaps measured by optical absorption spectroscopy were in line with the predicted value of
Sr
x
Ba
1
−
x
BiO
3 for
x
<
0.25, decreasing with an increase in
x to reach zero at
x
=
0.348. This suggests that
BaBiO
3 may have topological order and that, upon appropriate doping, it may be used as a topological insulator or superconductor in quantum-computing devices. This work may open up new avenues toward engineering of topological insulators with precise and reproducible control of stoichiometry, obviating extreme deposition temperatures or vacuum processing. |
| doi_str_mv | 10.1063/5.0094378 |
| format | Article |
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x
Ba
1
−
x
BiO
3 (
0
≤
x
<
0.5) films were fabricated from solution-phase precursors using flow-limited field-injection electrostatic spraying to investigate the predicted topological properties of
BaBiO
3, an oxide perovskite. The films were analyzed via x-ray diffraction, optical conductivity, and Raman spectroscopy. The bandgaps measured by optical absorption spectroscopy were in line with the predicted value of
Sr
x
Ba
1
−
x
BiO
3 for
x
<
0.25, decreasing with an increase in
x to reach zero at
x
=
0.348. This suggests that
BaBiO
3 may have topological order and that, upon appropriate doping, it may be used as a topological insulator or superconductor in quantum-computing devices. This work may open up new avenues toward engineering of topological insulators with precise and reproducible control of stoichiometry, obviating extreme deposition temperatures or vacuum processing.</description><identifier>ISSN: 0021-8979</identifier><identifier>EISSN: 1089-7550</identifier><identifier>DOI: 10.1063/5.0094378</identifier><identifier>CODEN: JAPIAU</identifier><language>eng</language><publisher>Melville: American Institute of Physics</publisher><subject>Applied physics ; Energy gap ; Perovskites ; Quantum computing ; Raman spectroscopy ; Spraying ; Stoichiometry ; Topological insulators</subject><ispartof>Journal of applied physics, 2022-07, Vol.132 (1)</ispartof><rights>Author(s)</rights><rights>2022 Author(s). Published under an exclusive license by AIP Publishing.</rights><lds50>peer_reviewed</lds50><woscitedreferencessubscribed>false</woscitedreferencessubscribed><orcidid>0000-0003-4626-8590 ; 0000-0001-8372-6146 ; 0000-0002-1167-4882</orcidid></display><links><openurl>$$Topenurl_article</openurl><openurlfulltext>$$Topenurlfull_article</openurlfulltext><thumbnail>$$Tsyndetics_thumb_exl</thumbnail><linktohtml>$$Uhttps://pubs.aip.org/jap/article-lookup/doi/10.1063/5.0094378$$EHTML$$P50$$Gscitation$$H</linktohtml><link.rule.ids>314,776,780,790,4498,27903,27904,76130</link.rule.ids></links><search><creatorcontrib>Vesto, Riley</creatorcontrib><creatorcontrib>Choi, Hyungsoo</creatorcontrib><creatorcontrib>Kim, Kyekyoon</creatorcontrib><title>Observation of bandgap closing in SrxBa1−xBiO3 films: Evidence toward topological order in BaBiO3</title><title>Journal of applied physics</title><description>Sr
x
Ba
1
−
x
BiO
3 (
0
≤
x
<
0.5) films were fabricated from solution-phase precursors using flow-limited field-injection electrostatic spraying to investigate the predicted topological properties of
BaBiO
3, an oxide perovskite. The films were analyzed via x-ray diffraction, optical conductivity, and Raman spectroscopy. The bandgaps measured by optical absorption spectroscopy were in line with the predicted value of
Sr
x
Ba
1
−
x
BiO
3 for
x
<
0.25, decreasing with an increase in
x to reach zero at
x
=
0.348. This suggests that
BaBiO
3 may have topological order and that, upon appropriate doping, it may be used as a topological insulator or superconductor in quantum-computing devices. This work may open up new avenues toward engineering of topological insulators with precise and reproducible control of stoichiometry, obviating extreme deposition temperatures or vacuum processing.</description><subject>Applied physics</subject><subject>Energy gap</subject><subject>Perovskites</subject><subject>Quantum computing</subject><subject>Raman spectroscopy</subject><subject>Spraying</subject><subject>Stoichiometry</subject><subject>Topological insulators</subject><issn>0021-8979</issn><issn>1089-7550</issn><fulltext>true</fulltext><rsrctype>article</rsrctype><creationdate>2022</creationdate><recordtype>article</recordtype><recordid>eNp9kM1KAzEUhYMoWKsL3yDgTpiaTJJJxp0t9QcKXajrkL8pKdPJmExrfQPXPqJP4tQW3Lk6cPnOvfccAC4xGmFUkBs2QqikhIsjMMBIlBlnDB2DAUI5zkTJy1NwltISIYwFKQfAzHVycaM6HxoYKqhVYxeqhaYOyTcL6Bv4HLdjhb8_v7ZjPyew8vUq3cLpxlvXGAe78K6i7aUNdVh4o2oYonVxZx2rneUcnFSqTu7ioEPwej99mTxms_nD0-RulrX9L13muMG6tIRoQjgpMKJ5SRkrbN6Pnalyah1yRmmrhS4YzbkmAitd5JQ6yhAZgqv93jaGt7VLnVyGdWz6kzIvBOWEMyJ66npPJeO739yyjX6l4ofESO5KlEweSvwP3oT4B8rWVuQHMwFyeg</recordid><startdate>20220707</startdate><enddate>20220707</enddate><creator>Vesto, Riley</creator><creator>Choi, Hyungsoo</creator><creator>Kim, Kyekyoon</creator><general>American Institute of Physics</general><scope>8FD</scope><scope>H8D</scope><scope>L7M</scope><orcidid>https://orcid.org/0000-0003-4626-8590</orcidid><orcidid>https://orcid.org/0000-0001-8372-6146</orcidid><orcidid>https://orcid.org/0000-0002-1167-4882</orcidid></search><sort><creationdate>20220707</creationdate><title>Observation of bandgap closing in SrxBa1−xBiO3 films: Evidence toward topological order in BaBiO3</title><author>Vesto, Riley ; Choi, Hyungsoo ; Kim, Kyekyoon</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-LOGICAL-p183t-e7c1b9d33b33736104294556d21b9ecf24de0ecabdb8b65427b381ab6244e4503</frbrgroupid><rsrctype>articles</rsrctype><prefilter>articles</prefilter><language>eng</language><creationdate>2022</creationdate><topic>Applied physics</topic><topic>Energy gap</topic><topic>Perovskites</topic><topic>Quantum computing</topic><topic>Raman spectroscopy</topic><topic>Spraying</topic><topic>Stoichiometry</topic><topic>Topological insulators</topic><toplevel>peer_reviewed</toplevel><toplevel>online_resources</toplevel><creatorcontrib>Vesto, Riley</creatorcontrib><creatorcontrib>Choi, Hyungsoo</creatorcontrib><creatorcontrib>Kim, Kyekyoon</creatorcontrib><collection>Technology Research Database</collection><collection>Aerospace Database</collection><collection>Advanced Technologies Database with Aerospace</collection><jtitle>Journal of applied physics</jtitle></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext</fulltext></delivery><addata><au>Vesto, Riley</au><au>Choi, Hyungsoo</au><au>Kim, Kyekyoon</au><format>journal</format><genre>article</genre><ristype>JOUR</ristype><atitle>Observation of bandgap closing in SrxBa1−xBiO3 films: Evidence toward topological order in BaBiO3</atitle><jtitle>Journal of applied physics</jtitle><date>2022-07-07</date><risdate>2022</risdate><volume>132</volume><issue>1</issue><issn>0021-8979</issn><eissn>1089-7550</eissn><coden>JAPIAU</coden><abstract>Sr
x
Ba
1
−
x
BiO
3 (
0
≤
x
<
0.5) films were fabricated from solution-phase precursors using flow-limited field-injection electrostatic spraying to investigate the predicted topological properties of
BaBiO
3, an oxide perovskite. The films were analyzed via x-ray diffraction, optical conductivity, and Raman spectroscopy. The bandgaps measured by optical absorption spectroscopy were in line with the predicted value of
Sr
x
Ba
1
−
x
BiO
3 for
x
<
0.25, decreasing with an increase in
x to reach zero at
x
=
0.348. This suggests that
BaBiO
3 may have topological order and that, upon appropriate doping, it may be used as a topological insulator or superconductor in quantum-computing devices. This work may open up new avenues toward engineering of topological insulators with precise and reproducible control of stoichiometry, obviating extreme deposition temperatures or vacuum processing.</abstract><cop>Melville</cop><pub>American Institute of Physics</pub><doi>10.1063/5.0094378</doi><tpages>6</tpages><orcidid>https://orcid.org/0000-0003-4626-8590</orcidid><orcidid>https://orcid.org/0000-0001-8372-6146</orcidid><orcidid>https://orcid.org/0000-0002-1167-4882</orcidid></addata></record> |
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| ispartof | Journal of applied physics, 2022-07, Vol.132 (1) |
| issn | 0021-8979 1089-7550 |
| language | eng |
| recordid | cdi_proquest_journals_2684737538 |
| source | AIP Journals Complete; Alma/SFX Local Collection |
| subjects | Applied physics Energy gap Perovskites Quantum computing Raman spectroscopy Spraying Stoichiometry Topological insulators |
| title | Observation of bandgap closing in SrxBa1−xBiO3 films: Evidence toward topological order in BaBiO3 |
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