Senkovskiy, B.V., Usachov, D.Y., Fedorov, A.V., Marangoni, T., Haberer, D., Tresca, C., Profeta, G., Caciuc, V., Tsukamoto, S., Atodiresei, N., Ehlen, N., Chen, C., Avila, J., Asensio, M.C., Varykhalov, A.Y., Nefedov, A., Woll, C., Kim, T.K., Hoesch, M., Fischer, F.R. and Grüneis, A. (2018). Boron-Doped Graphene Nanoribbons: Electronic Structure and Raman Fingerprint. ACS Nano, 8 (12). pp. 7571-7582. American Chemical Society. ISSN 1936-0851

[img]
Preview
PDF
boris17-boron9.pdf - Accepted Version

Download (4MB) | Preview

Abstract

We show that strong chemical interaction between boron doped graphene nanoribbons with N = 7 atoms width (B-7AGNRs) and an Au substrate leads to periodic out-of-plane corrugation and electron doping of B-7AGNRs. Using angle-resolved photoemission spectroscopy (ARPES), we find that the dopant-derived bands hybridize with substrate electronic states and spread in energy. The interaction with the substrate leaves the bands with pure carbon character unperturbed. This results in an identical effectives mass of ∼ 0.2 m0 compared to pristine 7AGNRs. The presence of boron atoms further manifests in the vibrational properties. We probe the phonons of B-7AGNRs in situ by Raman spectroscopy. We reveal the existence of characteristic splittings and red-shifts of Raman modes due to the presence of C-B bonds. The strongly hybridized electronic structure of the B-7AGNR - Au contact can be useful for carbon based nanoelectronics. The Raman fingerprint allows easy identification in device geometries.

Item Type: Journal Article
Creators:
CreatorsEmailORCID
Senkovskiy, B.V.UNSPECIFIEDUNSPECIFIED
Usachov, D.Y.UNSPECIFIEDUNSPECIFIED
Fedorov, A.V.UNSPECIFIEDUNSPECIFIED
Marangoni, T.UNSPECIFIEDUNSPECIFIED
Haberer, D.UNSPECIFIEDUNSPECIFIED
Tresca, C.UNSPECIFIEDUNSPECIFIED
Profeta, G.UNSPECIFIEDUNSPECIFIED
Caciuc, V.UNSPECIFIEDUNSPECIFIED
Tsukamoto, S.UNSPECIFIEDUNSPECIFIED
Atodiresei, N.UNSPECIFIEDUNSPECIFIED
Ehlen, N.UNSPECIFIEDUNSPECIFIED
Chen, C.UNSPECIFIEDUNSPECIFIED
Avila, J.UNSPECIFIEDUNSPECIFIED
Asensio, M.C.UNSPECIFIEDUNSPECIFIED
Varykhalov, A.Y.UNSPECIFIEDUNSPECIFIED
Nefedov, A.UNSPECIFIEDUNSPECIFIED
Woll, C.UNSPECIFIEDUNSPECIFIED
Kim, T.K.UNSPECIFIEDUNSPECIFIED
Hoesch, M.UNSPECIFIEDUNSPECIFIED
Fischer, F.R.UNSPECIFIEDUNSPECIFIED
Grüneis, A.UNSPECIFIEDUNSPECIFIED
URN: urn:nbn:de:hbz:38-85624
DOI: 10.1021/acsnano.8b04125
Journal or Publication Title: ACS Nano
Publisher: American Chemical Society
ISSN: 1936-0851
Volume: 8
Number: 12
Subjects: Physics
Faculty: Faculty of Mathematics and Natural Sciences
Divisions: Faculty of Mathematics and Natural Sciences > Department of Physics > Institute of Physics II
Language: English
Date: 13 July 2018
Funders: ERC grant no. 648589 ’SUPER-2D’, INST 216/808-1 FUGG, “Quantum Matter and Materials” (QM2) initiative, U.S. Department of Energy (DOE), Office of Science, Basic Energy Sciences (BES), under Award no. DE-SC0010409, Center for Energy Efficient Electronics Science NSF Award 0939514, European Community’s Seventh Framework Programme (FP7/2007-2013) under grant agreement n.312284 (CALIPSO), Institutional Strategy of the University of Cologne within the German Excellence Initiative
Projects: DFG project CRC 1238 (project A1), DFG project GR 3708/2-1
Refereed: Yes
Page Range: pp. 7571-7582
URI: http://kups.ub.uni-koeln.de/id/eprint/8562

Downloads

Downloads per month over past year

Altmetric

Export

Actions (login required)

View Item View Item