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Cited by 494

The DOI matches its Crossref record; 98 of the 98 references it cites were found in a registry or an index.

Electronic Structure of Atomically Precise Graphene Nanoribbons

Open access
Ruffieux, Pascal, Cai, Jinming, Plumb, Nicholas C., Patthey, Luc, Prezzi, Deborah, Ferretti, Andrea, Molinari, Elisa, Feng, Xinliang, Müllen, Klaus, Pignedoli, Carlo A., Fasel, Roman·2012·ACS Nano

Abstract

Some of the most intriguing properties of graphene are predicted for specifically designed nanostructures such as nanoribbons. Functionalities far beyond those known from extended graphene systems include electronic band gap variations related to quantum confinement and edge effects, as well as localized spin-polarized edge states for specific edge geometries. The inability to produce graphene nanostructures with the needed precision, however, has so far hampered the verification of the predicted electronic properties. Here, we report on the electronic band gap and dispersion of the occupied electronic bands of atomically precise graphene nanoribbons fabricated via on-surface synthesis. Angle-resolved photoelectron spectroscopy and scanning tunneling spectroscopy data from armchair graphene nanoribbons of width N = 7 supported on Au(111) reveal a band gap of 2.3 eV, an effective mass of 0.21 m(0) at the top of the valence band, and an energy-dependent charge carrier velocity reaching 8.2 × 10(5) m/s in the linear part of the valence band. These results are in quantitative agreement with theoretical predictions that include image charge corrections accounting for screening by the metal substrate and confirm the importance of electron-electron interactions in graphene nanoribbons.

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Crossref · 10.1021/nn3021376

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Metadata

Authors
Ruffieux, P., Cai, J., Plumb, N. C., Patthey, L., Prezzi, D., Ferretti, A., Molinari, E., Feng, X., Müllen, K., Pignedoli, C. A., & Fasel, R.
Venue
ACS Nano
Published
2012-08-07
Volume
6
Issue
8
Pages
6930-6935
ISSN
  • 1936-0851 (ISSN-L)
  • 1936-086X
OpenAlex
W2043515229
Cited by
494
References
98
FWCI
14.19
Type
journal article
Language
en
Open access
green

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