Three-dimensional networks of superconducting NbSe2 flakes with nearly isotropic large upper critical field

Abstract Increasing the upper critical field H c2 in superconductors is one of the most significant requirements for superconducting applications. Two-dimensional (2D) noncentrosymmetric NbSe2 is a promising candidate because its pair breaking is protected by the spin-momentum locking effect, result...

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Autores principales:	Togo Takahashi, Chisato Ando, Mitsufumi Saito, Yasumitsu Miyata, Yusuke Nakanishi, Jiang Pu, Taishi Takenobu
Formato:	article
Lenguaje:	EN
Publicado:	Nature Portfolio 2021
Materias:	Materials of engineering and construction. Mechanics of materials TA401-492 Chemistry QD1-999
Acceso en línea:	https://doaj.org/article/215361a0f8a7450d9539ce7546513833
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spelling	oai:doaj.org-article:215361a0f8a7450d9539ce75465138332021-12-02T13:18:06ZThree-dimensional networks of superconducting NbSe2 flakes with nearly isotropic large upper critical field10.1038/s41699-021-00210-72397-7132https://doaj.org/article/215361a0f8a7450d9539ce75465138332021-03-01T00:00:00Zhttps://doi.org/10.1038/s41699-021-00210-7https://doaj.org/toc/2397-7132Abstract Increasing the upper critical field H c2 in superconductors is one of the most significant requirements for superconducting applications. Two-dimensional (2D) noncentrosymmetric NbSe2 is a promising candidate because its pair breaking is protected by the spin-momentum locking effect, resulting in a giant in-plane H c2 (~50 T). However, the strong anisotropy of 2D NbSe2 suppresses the robustness of out-of-plane H c2 (<5 T). To overcome this issue, we propose a synthetic approach to produce superconducting NbSe2 films with a nearly isotropic large H c2. Scalable selenization methods are tailored to create 3D superconducting networks in which 2D NbSe2 flakes are vertically aligned to the substrates. The angle-resolved magneto-transports reveal enhanced H c2 values that exceed 20 T for arbitrary directions under externally applied magnetic fields. The isotropic nature of H c2 is attributed to the averaging intrinsic anisotropy of NbSe2 through 3D structured films, which was determined by X-ray diffraction measurements. The proposed synthetic approach will provide a new method for creating practical superconductors that are robust against magnetic fields.Togo TakahashiChisato AndoMitsufumi SaitoYasumitsu MiyataYusuke NakanishiJiang PuTaishi TakenobuNature PortfolioarticleMaterials of engineering and construction. Mechanics of materialsTA401-492ChemistryQD1-999ENnpj 2D Materials and Applications, Vol 5, Iss 1, Pp 1-8 (2021)
institution	DOAJ
collection	DOAJ
language	EN
topic	Materials of engineering and construction. Mechanics of materials TA401-492 Chemistry QD1-999
spellingShingle	Materials of engineering and construction. Mechanics of materials TA401-492 Chemistry QD1-999 Togo Takahashi Chisato Ando Mitsufumi Saito Yasumitsu Miyata Yusuke Nakanishi Jiang Pu Taishi Takenobu Three-dimensional networks of superconducting NbSe2 flakes with nearly isotropic large upper critical field
description	Abstract Increasing the upper critical field H c2 in superconductors is one of the most significant requirements for superconducting applications. Two-dimensional (2D) noncentrosymmetric NbSe2 is a promising candidate because its pair breaking is protected by the spin-momentum locking effect, resulting in a giant in-plane H c2 (~50 T). However, the strong anisotropy of 2D NbSe2 suppresses the robustness of out-of-plane H c2 (<5 T). To overcome this issue, we propose a synthetic approach to produce superconducting NbSe2 films with a nearly isotropic large H c2. Scalable selenization methods are tailored to create 3D superconducting networks in which 2D NbSe2 flakes are vertically aligned to the substrates. The angle-resolved magneto-transports reveal enhanced H c2 values that exceed 20 T for arbitrary directions under externally applied magnetic fields. The isotropic nature of H c2 is attributed to the averaging intrinsic anisotropy of NbSe2 through 3D structured films, which was determined by X-ray diffraction measurements. The proposed synthetic approach will provide a new method for creating practical superconductors that are robust against magnetic fields.
format	article
author	Togo Takahashi Chisato Ando Mitsufumi Saito Yasumitsu Miyata Yusuke Nakanishi Jiang Pu Taishi Takenobu
author_facet	Togo Takahashi Chisato Ando Mitsufumi Saito Yasumitsu Miyata Yusuke Nakanishi Jiang Pu Taishi Takenobu
author_sort	Togo Takahashi
title	Three-dimensional networks of superconducting NbSe2 flakes with nearly isotropic large upper critical field
title_short	Three-dimensional networks of superconducting NbSe2 flakes with nearly isotropic large upper critical field
title_full	Three-dimensional networks of superconducting NbSe2 flakes with nearly isotropic large upper critical field
title_fullStr	Three-dimensional networks of superconducting NbSe2 flakes with nearly isotropic large upper critical field
title_full_unstemmed	Three-dimensional networks of superconducting NbSe2 flakes with nearly isotropic large upper critical field
title_sort	three-dimensional networks of superconducting nbse2 flakes with nearly isotropic large upper critical field
publisher	Nature Portfolio
publishDate	2021
url	https://doaj.org/article/215361a0f8a7450d9539ce7546513833
work_keys_str_mv	AT togotakahashi threedimensionalnetworksofsuperconductingnbse2flakeswithnearlyisotropiclargeuppercriticalfield AT chisatoando threedimensionalnetworksofsuperconductingnbse2flakeswithnearlyisotropiclargeuppercriticalfield AT mitsufumisaito threedimensionalnetworksofsuperconductingnbse2flakeswithnearlyisotropiclargeuppercriticalfield AT yasumitsumiyata threedimensionalnetworksofsuperconductingnbse2flakeswithnearlyisotropiclargeuppercriticalfield AT yusukenakanishi threedimensionalnetworksofsuperconductingnbse2flakeswithnearlyisotropiclargeuppercriticalfield AT jiangpu threedimensionalnetworksofsuperconductingnbse2flakeswithnearlyisotropiclargeuppercriticalfield AT taishitakenobu threedimensionalnetworksofsuperconductingnbse2flakeswithnearlyisotropiclargeuppercriticalfield
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Three-dimensional networks of superconducting NbSe2 flakes with nearly isotropic large upper critical field

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