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Magneto-Spin–Orbit Graphene: Interplay between Exchange and Spin–Orbit Couplings

Authors: Mikhail M. Otrokov; Arthur Ernst; Arthur Ernst; A. A. Rybkina; Andrés Arnau; Andrés Arnau; Vladimir Yu. Voroshnin; +9 Authors

Magneto-Spin–Orbit Graphene: Interplay between Exchange and Spin–Orbit Couplings

Abstract

A rich class of spintronics-relevant phenomena require implementation of robust magnetism and/or strong spin-orbit coupling (SOC) to graphene, but both properties are completely alien to it. Here, we for the first time experimentally demonstrate that a quasi-freestanding character, strong exchange splitting and giant SOC are perfectly achievable in graphene at once. Using angle- and spin-resolved photoemission spectroscopy, we show that the Dirac state in the Au-intercalated graphene on Co(0001) experiences giant splitting (up to 0.2 eV) while being by no means distorted due to interaction with the substrate. Our calculations, based on the density functional theory, reveal the splitting to stem from the combined action of the Co thin film in-plane exchange field and Au-induced Rashba SOC. Scanning tunneling microscopy data suggest that the peculiar reconstruction of the Au/Co(0001) interface is responsible for the exchange field transfer to graphene. The realization of this "magneto-spin-orbit" version of graphene opens new frontiers for both applied and fundamental studies using its unusual electronic bandstructure.

Keywords

Electronic structure, электронная структура, фотоэмиссионная спектроскопия с угловым и спиновым разрешением, Angle- and spin-resolved photoemission spectroscopy, сканирующая туннельная микроскопия, спин-орбитальная связь, Spin−orbit and exchange coupling, графен, обменная связь, Ab initio calculations, Graphene, Scanning tunneling microscopy

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selected citations
These citations are derived from selected sources.
This is an alternative to the "Influence" indicator, which also reflects the overall/total impact of an article in the research community at large, based on the underlying citation network (diachronically).
BIP!Citations provided by BIP!
popularity
This indicator reflects the "current" impact/attention (the "hype") of an article in the research community at large, based on the underlying citation network.
BIP!Popularity provided by BIP!
influence
This indicator reflects the overall/total impact of an article in the research community at large, based on the underlying citation network (diachronically).
BIP!Influence provided by BIP!
impulse
This indicator reflects the initial momentum of an article directly after its publication, based on the underlying citation network.
BIP!Impulse provided by BIP!
views
OpenAIRE UsageCountsViews provided by UsageCounts
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40
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26
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