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Polaron formation in Bi-deficient

Acevedo, WR and Di Napoli, S and Romano, F and Ruiz, GR and Nukala, P and Quinteros, C and Lecourt, J and Lüders, U and Vildosola, V and Rubi, D (2021) Polaron formation in Bi-deficient. In: Physical Review B, 104 (12).

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Official URL: https://doi.org/10.1103/PhysRevB.104.125307


is a charged ordered Peierls-like perovskite well known for its superconducting properties upon K or Pb doping. We present a study on the transport and electronic properties of perovskite with strong Bi deficiency. We show that it is possible to synthesize thin layers with Bi vacancies above 8-10 by depositing an yttrium-stabilized zirconia capping layer. By combining transport measurements with ab initio calculations we propose a scenario where the Bi vacancies give rise to the formation of polarons and suggest that the electrical transport is dominated by the migration of these polarons trapped at sites. Our paper shows that cation vacancies engineering, hardly explored to date, appears as a promising pathway to tune the electronic and functional properties of perovskites. © 2021 American Physical Society

Item Type: Journal Article
Publication: Physical Review B
Publisher: American Physical Society
Additional Information: The copyright for this article belongs to the Authors
Keywords: Calculations; Electronic properties; Polarons; Zirconia, Ab initio calculations; Capping layer; K-doping; Pb doping; Peierls; Polaron formation; Superconducting properties; Thin layers; Transport measurements; Yttrium stabilized zirconia, Perovskite
Department/Centre: Division of Interdisciplinary Sciences > Centre for Nano Science and Engineering
Date Deposited: 29 Nov 2021 10:02
Last Modified: 29 Nov 2021 10:02
URI: http://eprints.iisc.ac.in/id/eprint/70279

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