DataVXACS NanoPaper
journal article·2017-06-27

Raman Spectroscopy of Lattice-Matched Graphene on Strongly Interacting Metal Surfaces

Dmitry Yu. Usachov, Valery Yu. Davydov, Vladimir S. Levitskii, Viktor O. Shevelev, Dmitry Marchenko, Boris V. Senkovskiy, Oleg Yu. Vilkov, Artem G. Rybkin, Lada V. Yashina, Evgueni V. Chulkov, Irina Yu. Sklyadneva, Rolf Heid, Klaus-Peter Bohnen, Clemens Laubschat, Denis V. Vyalikh

ACS Nano· Volume 11· Issue 6
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Source abstract

Abstract

Regardless of the widely accepted opinion that there is no Raman signal from single-layer graphene when it is strongly bonded to a metal surface, we present Raman spectra of a graphene monolayer on Ni(111) and Co(0001) substrates. The high binding energy of carbon to these surfaces allows formation of lattice-matched (1 × 1) structures where graphene is significantly stretched. This is reflected in a record-breaking shift of the Raman G band by more than 100 cm –1 relative to the case of freestanding graphene. Using electron diffraction and photoemission spectroscopy, we explore the aforementioned systems together with polycrystalline graphene on Co and analyze possible intercalation of oxygen at ambient conditions. The results obtained are fully supported by Raman spectroscopy. Performing a theoretical investigation of the phonon dispersions of freestanding graphene and stretched graphene on the strongly interacting Co surface, we explain the main features of the Raman spectra. Our results create a reliable platform for application of Raman spectroscopy in diagnostics of chemisorbed graphene and related materials.
Source: openalex_inverted_index · Quality: baseline

Research context

Nanomaterials

OpenAlex topics: Graphene research and applications · Advancements in Battery Materials · Diamond and Carbon-based Materials Research

SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.

Affiliations

St. Petersburg State University, 7/9 Universitetskaya nab., St. Petersburg, 199034, Russia

Ioffe Physical Technical Institute, St. Petersburg, 194021, Russia

ITMO University, St. Petersburg, 197101, Russia

Helmholtz-Zentrum Berlin für Materialien und Energie, 14109 Berlin, Germany

II Physikalisches Institut, Universität zu Köln, Zülpicher Straße 77, 50937 Köln, Germany

M.V. Lomonosov Moscow State University, Leninskie Gory 1/3, 199991 Moscow, Russia

Departamento de Fisica de Materiales and CFM-MPC UPV/EHU, Donostia International Physics Center (DIPC), 20080 San Sebastian, Spain

Tomsk State University, Lenina Avenue, 36, 634050 Tomsk, Russia

Institut für Festkörperphysik, Karlsruher Institut für Technologie, D-76021 Karlsruhe, Germany

Institute of Strength Physics and Materials Science, pr. Academicheskii 2/1, 634021, Tomsk, Russian Federation

Institute of Solid State Physics, Dresden University of Technology, 01062 Dresden, Germany

IKERBASQUE, Basque Foundation for Science, 48011 Bilbao, Spain

Funding

Russian Science Foundation · Ministerio de Ciencia e Innovaci?n · Deutsche Forschungsgemeinschaft · Russian Foundation for Basic Research · Saint Petersburg State University · Helmholtz-Zentrum Berlin f?r Materialien und Energie

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