Dopant size effects on novel functionalities: High-temperature interfacial superconductivity

Abstract Among the range of complex interactions, especially at the interfaces of epitaxial oxide systems, contributing to the occurrence of intriguing effects, a predominant role is played by the local structural parameters. In this study, oxide molecular beam epitaxy grown lanthanum cuprate-based...

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Autores principales:	Y. Eren Suyolcu, Yi Wang, Federico Baiutti, Ameer Al-Temimy, Giuliano Gregori, Georg Cristiani, Wilfried Sigle, Joachim Maier, Peter A. van Aken, Gennady Logvenov
Formato:	article
Lenguaje:	EN
Publicado:	Nature Portfolio 2017
Materias:	Medicine R Science Q
Acceso en línea:	https://doaj.org/article/265fbe237f9d4fa19c95ad92f1b6ac2b
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spelling	oai:doaj.org-article:265fbe237f9d4fa19c95ad92f1b6ac2b2021-12-02T16:07:49ZDopant size effects on novel functionalities: High-temperature interfacial superconductivity10.1038/s41598-017-00539-42045-2322https://doaj.org/article/265fbe237f9d4fa19c95ad92f1b6ac2b2017-03-01T00:00:00Zhttps://doi.org/10.1038/s41598-017-00539-4https://doaj.org/toc/2045-2322Abstract Among the range of complex interactions, especially at the interfaces of epitaxial oxide systems, contributing to the occurrence of intriguing effects, a predominant role is played by the local structural parameters. In this study, oxide molecular beam epitaxy grown lanthanum cuprate-based bilayers (consisting of a metallic (M) and an insulating phase (I)), in which high-temperature superconductivity arises as a consequence of interface effects, are considered. With the aim of assessing the role of the dopant size on local crystal structure and chemistry, and on the interface functionalities, different dopants (Ca2+, Sr2+ and, Ba2+) are employed in the M-phase, and the M–I bilayers are investigated by complementary techniques, including spherical-aberration-corrected scanning transmission electron microscopy. A series of exciting outcomes are found: (i) the average out-of-plane lattice parameter of the bilayers is linearly dependent on the dopant ion size, (ii) each dopant redistributes at the interface with a characteristic diffusion length, and (iii) the superconductivity properties are highly dependent on the dopant of choice. Hence, this study highlights the profound impact of the dopant size and related interface chemistry on the functionalities of superconducting oxide systems.Y. Eren SuyolcuYi WangFederico BaiuttiAmeer Al-TemimyGiuliano GregoriGeorg CristianiWilfried SigleJoachim MaierPeter A. van AkenGennady LogvenovNature PortfolioarticleMedicineRScienceQENScientific Reports, Vol 7, Iss 1, Pp 1-9 (2017)
institution	DOAJ
collection	DOAJ
language	EN
topic	Medicine R Science Q
spellingShingle	Medicine R Science Q Y. Eren Suyolcu Yi Wang Federico Baiutti Ameer Al-Temimy Giuliano Gregori Georg Cristiani Wilfried Sigle Joachim Maier Peter A. van Aken Gennady Logvenov Dopant size effects on novel functionalities: High-temperature interfacial superconductivity
description	Abstract Among the range of complex interactions, especially at the interfaces of epitaxial oxide systems, contributing to the occurrence of intriguing effects, a predominant role is played by the local structural parameters. In this study, oxide molecular beam epitaxy grown lanthanum cuprate-based bilayers (consisting of a metallic (M) and an insulating phase (I)), in which high-temperature superconductivity arises as a consequence of interface effects, are considered. With the aim of assessing the role of the dopant size on local crystal structure and chemistry, and on the interface functionalities, different dopants (Ca2+, Sr2+ and, Ba2+) are employed in the M-phase, and the M–I bilayers are investigated by complementary techniques, including spherical-aberration-corrected scanning transmission electron microscopy. A series of exciting outcomes are found: (i) the average out-of-plane lattice parameter of the bilayers is linearly dependent on the dopant ion size, (ii) each dopant redistributes at the interface with a characteristic diffusion length, and (iii) the superconductivity properties are highly dependent on the dopant of choice. Hence, this study highlights the profound impact of the dopant size and related interface chemistry on the functionalities of superconducting oxide systems.
format	article
author	Y. Eren Suyolcu Yi Wang Federico Baiutti Ameer Al-Temimy Giuliano Gregori Georg Cristiani Wilfried Sigle Joachim Maier Peter A. van Aken Gennady Logvenov
author_facet	Y. Eren Suyolcu Yi Wang Federico Baiutti Ameer Al-Temimy Giuliano Gregori Georg Cristiani Wilfried Sigle Joachim Maier Peter A. van Aken Gennady Logvenov
author_sort	Y. Eren Suyolcu
title	Dopant size effects on novel functionalities: High-temperature interfacial superconductivity
title_short	Dopant size effects on novel functionalities: High-temperature interfacial superconductivity
title_full	Dopant size effects on novel functionalities: High-temperature interfacial superconductivity
title_fullStr	Dopant size effects on novel functionalities: High-temperature interfacial superconductivity
title_full_unstemmed	Dopant size effects on novel functionalities: High-temperature interfacial superconductivity
title_sort	dopant size effects on novel functionalities: high-temperature interfacial superconductivity
publisher	Nature Portfolio
publishDate	2017
url	https://doaj.org/article/265fbe237f9d4fa19c95ad92f1b6ac2b
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_version_	1718384705176338432

Dopant size effects on novel functionalities: High-temperature interfacial superconductivity

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