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Influence of surface and subsurface Co–Ir alloy on the electronic properties of graphene

Influence of surface and subsurface Co–Ir alloy on the electronic properties of graphene

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WANG, Kangli, Thomas VINCENT, Jean Baptiste BOUHIRON, Stephane PONS, Dimitri RODITCHEV, Sabina SIMON, Mikhail FONIN, Yuriy DEDKOV, Sergio VLAIC, Elena VOLOSHINA, 2021. Influence of surface and subsurface Co–Ir alloy on the electronic properties of graphene. In: Carbon. Elsevier. 183, pp. 251-258. ISSN 0008-6223. eISSN 1873-3891. Available under: doi: 10.1016/j.carbon.2021.06.082

@article{Wang2021Influ-55780, title={Influence of surface and subsurface Co–Ir alloy on the electronic properties of graphene}, year={2021}, doi={10.1016/j.carbon.2021.06.082}, volume={183}, issn={0008-6223}, journal={Carbon}, pages={251--258}, author={Wang, Kangli and Vincent, Thomas and Bouhiron, Jean Baptiste and Pons, Stephane and Roditchev, Dimitri and Simon, Sabina and Fonin, Mikhail and Dedkov, Yuriy and Vlaic, Sergio and Voloshina, Elena} }

Dedkov, Yuriy Voloshina, Elena Dedkov, Yuriy Vlaic, Sergio 2021-12-07T14:22:55Z Pons, Stephane Vlaic, Sergio Wang, Kangli 2021 Bouhiron, Jean Baptiste Roditchev, Dimitri Vincent, Thomas Fonin, Mikhail Bouhiron, Jean Baptiste Roditchev, Dimitri Using density functional theory (DFT) calculations and angle-resolved photoemission spectroscopy (ARPES) the structural and electronic properties of graphene on the surface and subsurface Co–Ir alloy are investigated upon the intercalation of Co in graphene/Ir(111). It is found computationally that the interaction strength between graphene and substrate is strongly affected by the composition and nature of an alloy, implying the large difference in the electronic structure of monolayer graphene on Co<sub>x</sub>Ir<sub>1−x</sub>/Ir(111) and Ir/Co<sub>x</sub>Ir<sub>1−x</sub>/Ir(111). Our theoretical results are supported by ARPES data, which demonstrate the disappearance of the Dirac cone when graphene lies on Co and its restoration upon the formation of the subsurface Co–Ir alloy. Fonin, Mikhail Wang, Kangli Voloshina, Elena Vincent, Thomas 2021-12-07T14:22:55Z Influence of surface and subsurface Co–Ir alloy on the electronic properties of graphene Pons, Stephane Simon, Sabina Simon, Sabina eng

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