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Adsorption of Na Mo...
Adsorption of Na Monolayer on Graphene Covered Pt(111) Substrate
- Article/chapterEnglish2023
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LIBRIS-ID:oai:DiVA.org:su-215171
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https://urn.kb.se/resolve?urn=urn:nbn:se:su:diva-215171URI
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https://doi.org/10.1134/S0021364022602706DOI
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Language:English
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Summary in:English
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Subject category:ref swepub-contenttype
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Subject category:art swepub-publicationtype
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Modification of graphene electronic properties via contact with atoms of different kind allows for designing a number of functional post-silicon electronic devices. Specifically, 2D metallic layer formation over graphene is a promising approach to improving the electronic properties of graphene-based systems. In this work we analyse the electronic and spin structure of graphene synthesized on Pt(111) after sodium monolayer adsorption by means of angle-resolved photoemission spectroscopy and ab initio calculations. Here, we show that sodium layer formation leads to a shift of the graphene pi states towards higher binding energies, but the most intriguing property of the studied system is the appearance of a partially spin-polarized Kanji symbol-like feature resembling the graphene Dirac cone in the electronic structure of adsorbed sodium. Our findings reveal that this structure is caused by a strong interaction between Na orbitals and Pt 5d spin-polarized states, where the graphene monolayer between them serves as a mediator of such interaction.
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Tarasov, A. V.
(author)
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Eryzhenkov, A. V.
(author)
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Rybkin, A. G.
(author)
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Shikin, A. M.
(author)
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Filianina, MariiaStockholms universitet,Fysikum(Swepub:su)mafi2978
(author)
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Klimovskikh, I. I.
(author)
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Stockholms universitetFysikum
(creator_code:org_t)
Related titles
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In:JETP Letters117:2, s. 138-1460021-36401090-6487
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