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Two-Dimensional Flexible High Diffusive Spin Circuits
Uppsala University, Disciplinary Domain of Science and Technology, Physics, Department of Physics and Astronomy, Molecular and Condensed Matter Physics.
Uppsala University, Disciplinary Domain of Science and Technology, Physics, Department of Physics and Astronomy, Molecular and Condensed Matter Physics.
Uppsala University, Disciplinary Domain of Science and Technology, Technology, Department of Engineering Sciences, Solid State Physics.
Uppsala University, Disciplinary Domain of Science and Technology, Technology, Department of Engineering Sciences, Solid State Electronics.
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2019 (English)In: Nano letters (Print), ISSN 1530-6984, E-ISSN 1530-6992, Vol. 19, no 2, p. 666-673Article in journal (Refereed) Published
Abstract [en]

Owing to their unprecedented electronic properties, graphene and two-dimensional (2D) crystals have brought fresh opportunities for advances in planar spintronic devices. Graphene is an ideal medium for spin transport while being an exceptionally resilient material for flexible nanoelectronics. However, these extraordinary traits have never been combined to create flexible graphene spin circuits. Realizing such circuits could lead to bendable strain-spin sensors, as well as a unique platform to explore pure spin current based operations and low-power 2D flexible nanoelectronics. Here, we demonstrate graphene spin circuits on flexible substrates for the first time. Despite the rough topography of the flexible substrates, these circuits prepared with chemical vapor deposited monolayer graphene reveal an efficient room temperature spin transport with distinctively large spin diffusion coefficients ∼0.2 m2 s–1. Compared to earlier graphene devices on Si/SiO2 substrates, such values are up to 20 times larger, leading to one order higher spin signals and an enhanced spin diffusion length ∼10 μm in graphene-based nonlocal spin valves fabricated using industry standard systems. This high performance arising out of a characteristic substrate terrain shows promise of a scalable and flexible platform towards flexible 2D spintronics. Our innovation is a key step for the exploration of strain-dependent 2D spin phenomena and paves the way for flexible graphene spin memory–logic units and planar spin sensors.

Place, publisher, year, edition, pages
2019. Vol. 19, no 2, p. 666-673
Keywords [en]
Flexible graphene spin circuits, flexible graphene spintronics, spin transport in graphene, two-dimensional spintronics, bendable nanoelectronics
National Category
Condensed Matter Physics Engineering and Technology
Identifiers
URN: urn:nbn:se:uu:diva-378732DOI: 10.1021/acs.nanolett.8b03520ISI: 000459222300006PubMedID: 30632370OAI: oai:DiVA.org:uu-378732DiVA, id: diva2:1294877
Funder
Swedish Research Council, 2016-03278Knut and Alice Wallenberg FoundationStiftelsen Olle Engkvist ByggmästareThe Wenner-Gren FoundationAvailable from: 2019-03-08 Created: 2019-03-08 Last updated: 2020-01-08Bibliographically approved

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Serrano, I. G.Panda, JaganandhaDenoel, FernandVallin, ÖrjanPhuyal, DibyaKaris, OlofKamalakar, M. Venkata

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Serrano, I. G.Panda, JaganandhaDenoel, FernandVallin, ÖrjanPhuyal, DibyaKaris, OlofKamalakar, M. Venkata
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Molecular and Condensed Matter PhysicsSolid State PhysicsSolid State Electronics
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