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Dynamics of Li deposition on epitaxial graphene/Ru(0001) islands



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Prieto, J.E. and González Barrio, Miguel Ángel and García Martín, E and Soria, Guiomar D. and Morales de La Garza, L. (2022) Dynamics of Li deposition on epitaxial graphene/Ru(0001) islands. Applied surface science, 593 . ISSN 0169-4332

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Official URL: http://dx.doi.org/10.1016/j.apsusc.2022.153274


Li metal has been deposited on the surface of a Ru(0001) single crystal containing patches of monolayer-thick epitaxial graphene islands. The use of low-energy electron microscopy and diffraction allowed us to in situ monitor the process by measuring the local work function as well as to study the system in real and reciprocal space, comparing the changes taking place on the graphene with those on the bare Ru(0001) surface. It is found that Li deposition decreases the work function of the graphene islands but to a much smaller degree than of the Ru(0001) surface, as corresponds to its intercalation below the graphene overlayer. Finally, the diffusion process of Li out of the graphene islands has been monitored by photoelectron microscopy using a visible-light laser.

Item Type:Article
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© 2022 The Authors. Published by Elsevier B.V.
This work is supported by grant RTI2018-095303-B-C51, funded by MCIN/AEI/10.13039/501100011033 and by ‘‘ERDF A way of making Europe’’, by grant PID2020-117024GB-C43 (Ministerio de Ciencia eInnovación) and by grant S2018-NMT-4321, funded by the Regional Government of Madrid, Spain and by ‘‘ERDF A way of making Europe’’.
L.M.G. acknowledges a sabbatical grant from DGAPA-UNAM.

Uncontrolled Keywords:Electronic-structure; charge-transfer; Work function; Lithium-ion; Graphene; Graphite; Intercalation; Adsorption; Density; energy; Li deposition; Epitaxial graphene on Ru(0001); Work function measurement; Low-Energy Electron Microscopy; Photoemission electron microscopy; Real -time surface dynamics
Subjects:Sciences > Physics > Materials
Sciences > Physics > Solid state physics
ID Code:72752
Deposited On:14 Jun 2022 18:24
Last Modified:15 Jun 2022 06:59

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