Oscillatory Nernst effect in Pt|ferrite|cuprate-superconductor trilayer films

Abstract Although magnetism and superconductivity hardly coexist in a single material, recent advances in nanotechnology and spintronics have brought to light their interplay in magnetotransport in thin-film heterostructures. Here, we found a periodic oscillation of Nernst voltage with respect to ma...

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Autores principales:	Y. Shiomi, J. Lustikova, E. Saitoh
Formato:	article
Lenguaje:	EN
Publicado:	Nature Portfolio 2017
Materias:	Medicine R Science Q
Acceso en línea:	https://doaj.org/article/6c17d20e70914ada9ec4aaaa092205ba
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spelling	oai:doaj.org-article:6c17d20e70914ada9ec4aaaa092205ba2021-12-02T11:40:22ZOscillatory Nernst effect in Pt\|ferrite\|cuprate-superconductor trilayer films10.1038/s41598-017-05747-62045-2322https://doaj.org/article/6c17d20e70914ada9ec4aaaa092205ba2017-07-01T00:00:00Zhttps://doi.org/10.1038/s41598-017-05747-6https://doaj.org/toc/2045-2322Abstract Although magnetism and superconductivity hardly coexist in a single material, recent advances in nanotechnology and spintronics have brought to light their interplay in magnetotransport in thin-film heterostructures. Here, we found a periodic oscillation of Nernst voltage with respect to magnetic fields in Pt\|LiFe5O8 (Pt\|LFO) bilayers grown on a cuprate superconductor YBa2Cu3O7−x (YBCO). At high temperatures above the superconducting transition temperature (T C ) of YBCO, spin Seebeck voltages originating in Pt\|LFO layers are observed. As temperature decreases well below T C , the spin Seebeck voltage is suppressed and unconventional periodic voltage oscillation as a function of magnetic fields appears; such an oscillation emerging along the Hall direction in the superconducting state has not been observed yet. Dynamics of superconducting vortices pinned by surface precipitates seems responsible for the oscillatory Nernst effect.Y. ShiomiJ. LustikovaE. SaitohNature PortfolioarticleMedicineRScienceQENScientific Reports, Vol 7, Iss 1, Pp 1-8 (2017)
institution	DOAJ
collection	DOAJ
language	EN
topic	Medicine R Science Q
spellingShingle	Medicine R Science Q Y. Shiomi J. Lustikova E. Saitoh Oscillatory Nernst effect in Pt\|ferrite\|cuprate-superconductor trilayer films
description	Abstract Although magnetism and superconductivity hardly coexist in a single material, recent advances in nanotechnology and spintronics have brought to light their interplay in magnetotransport in thin-film heterostructures. Here, we found a periodic oscillation of Nernst voltage with respect to magnetic fields in Pt\|LiFe5O8 (Pt\|LFO) bilayers grown on a cuprate superconductor YBa2Cu3O7−x (YBCO). At high temperatures above the superconducting transition temperature (T C ) of YBCO, spin Seebeck voltages originating in Pt\|LFO layers are observed. As temperature decreases well below T C , the spin Seebeck voltage is suppressed and unconventional periodic voltage oscillation as a function of magnetic fields appears; such an oscillation emerging along the Hall direction in the superconducting state has not been observed yet. Dynamics of superconducting vortices pinned by surface precipitates seems responsible for the oscillatory Nernst effect.
format	article
author	Y. Shiomi J. Lustikova E. Saitoh
author_facet	Y. Shiomi J. Lustikova E. Saitoh
author_sort	Y. Shiomi
title	Oscillatory Nernst effect in Pt\|ferrite\|cuprate-superconductor trilayer films
title_short	Oscillatory Nernst effect in Pt\|ferrite\|cuprate-superconductor trilayer films
title_full	Oscillatory Nernst effect in Pt\|ferrite\|cuprate-superconductor trilayer films
title_fullStr	Oscillatory Nernst effect in Pt\|ferrite\|cuprate-superconductor trilayer films
title_full_unstemmed	Oscillatory Nernst effect in Pt\|ferrite\|cuprate-superconductor trilayer films
title_sort	oscillatory nernst effect in pt\|ferrite\|cuprate-superconductor trilayer films
publisher	Nature Portfolio
publishDate	2017
url	https://doaj.org/article/6c17d20e70914ada9ec4aaaa092205ba
work_keys_str_mv	AT yshiomi oscillatorynernsteffectinptferritecupratesuperconductortrilayerfilms AT jlustikova oscillatorynernsteffectinptferritecupratesuperconductortrilayerfilms AT esaitoh oscillatorynernsteffectinptferritecupratesuperconductortrilayerfilms
_version_	1718395648238157824

Oscillatory Nernst effect in Pt|ferrite|cuprate-superconductor trilayer films

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