Observation of bandgap closing in SrxBa1−xBiO3 films: Evidence toward topological order in BaBiO3
| العنوان: | Observation of bandgap closing in SrxBa1−xBiO3 films: Evidence toward topological order in BaBiO3 |
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| المؤلفون: | Riley Vesto, Hyungsoo Choi, Kyekyoon Kim |
| المصدر: | Journal of Applied Physics. 132:015102 |
| بيانات النشر: | AIP Publishing, 2022. |
| سنة النشر: | 2022 |
| مصطلحات موضوعية: | General Physics and Astronomy |
| الوصف: | [Formula: see text] ([Formula: see text]) films were fabricated from solution-phase precursors using flow-limited field-injection electrostatic spraying to investigate the predicted topological properties of [Formula: see text], 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 [Formula: see text] for [Formula: see text], decreasing with an increase in [Formula: see text] to reach zero at [Formula: see text]. This suggests that [Formula: see text] 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. |
| تدمد: | 1089-7550 0021-8979 |
| DOI: | 10.1063/5.0094378 |
| URL الوصول: | https://explore.openaire.eu/search/publication?articleId=doi_________::63137c303ef82d5a67df50ed117c512c https://doi.org/10.1063/5.0094378 |
| رقم الانضمام: | edsair.doi...........63137c303ef82d5a67df50ed117c512c |
| قاعدة البيانات: | OpenAIRE |
| تدمد: | 10897550 00218979 |
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| DOI: | 10.1063/5.0094378 |