Probing the graphene/substrate interaction by electron tunneling decay

graphene; nickel; scanning tunneling microscopy; iridium; scanning tunneling spectroscopy; surface science; nanotechnology; 2d materials; ultra high vacuum; ultra-high vacuum

Abstract :

[en] The electronic properties of graphene can be modified by the local interaction with a selected metal substrate. To probe this effect, Scanning Tunneling Microscopy is widely employed, particularly by means of local measurement via lock-in amplifier of the differential conductance and of the field emission resonance. In this article we propose an alternative, reliable method of probing the graphene/substrate interaction that is readily available to any STM apparatus. By testing the tunneling current as function of the tip/sample distance on nanostructured graphene on Ni(100) and Ir (100), we demonstrate that I(z) spectroscopy can be quantitatively compared with Density Functional Theory calculations and can be used to assess the nature of the interaction between graphene and substrate. This method can expand the capabilities of standard STM systems to study graphene/substrate complexes, complementing standard topographic probing with spectroscopic information.

Disciplines :

Physics

Author, co-author :

Carnevali, V.

Sala, A.

Biasin, P.

PANIGHEL, Mirco ; CNR - Istituto Officina dei Materiali (IOM), Trieste, Laboratorio TASC, Strada Statale 14, km 163.5, 34149 Basovizza, Italy

Comelli, G.

Peressi, M.

Africh, C.

External co-authors :

yes

Language :

English

Title :

Probing the graphene/substrate interaction by electron tunneling decay

Publication date :

2023

Journal title :

Carbon

ISSN :

0008-6223

eISSN :

1873-3891

Volume :

210

Pages :

118055

Peer reviewed :

Peer Reviewed verified by ORBi

Focus Area :

Physics and Materials Science

Additional URL :

https://www.scopus.com/inward/record.uri?eid=2-s2.0-85154061824&doi=10.1016%2fj.carbon.2023.118055&partnerID=40&md5=22ef6c754a95001a69c8dc9d08949dc0

Funding text :

A.S. and M. Pe. acknowledge support from the Italian Ministry of University and Research (MUR) through the program PRIN 2017 – Project no. 2017KFY7XF. M.Pa. and C.A. acknowledge support from the Italian Ministry of University and Research (MUR) through the program PRIN 2017 – Project no. 2017NYPHN8.

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since 01 August 2024

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Bibliography

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