Spectroscopic characterization of N = 9 armchair graphene nanoribbons

Senkovskiy, B. V.; Haberer, D.; Usachov, D. Yu.; Fedorov, A. V.; Ehlen, N.; Hell, M.; Petaccia, L.; Di Santo, G.; Durr, R. A.; Fischer, F. R.; Grüneis, A.

doi:10.1002/pssr.201700157

Title: Spectroscopic characterization of N = 9 armchair graphene nanoribbons

Journal Article · Mon Jul 03 00:00:00 EDT 2017 · Physica Status Solidi. Rapid Research Letters

DOI:https://doi.org/10.1002/pssr.201700157· OSTI ID:1437964

Senkovskiy, B. V. ^[1]; Haberer, D. ^[2]; Usachov, D. Yu. ^[3]; Fedorov, A. V. ^[4]; Ehlen, N. ^[1]; Hell, M. ^[1]; Petaccia, L. ^[5]; Di Santo, G. ^[5]; Durr, R. A. ^[6]; Fischer, F. R. ^[7]; Grüneis, A. ^[8]

University of Cologne (Germany). II. Institute of Physics
Lawrence Berkeley National Lab. (LBNL), Berkeley, CA (United States). Department of Chemistry
St. Petersburg State University (Russia)
University of Cologne (Germany). II. Institute of Physics; St. Petersburg State University (Russia); IFW‐Dresden (Germany)
Elettra Sincrotrone Trieste (Italy)
Univ. of California, Berkeley, CA (United States). Department of Chemistry
Univ. of California, Berkeley, CA (United States). Department of Chemistry; Lawrence Berkeley National Lab. (LBNL), Berkeley, CA (United States). Materials Science Division; Kavli Energy Nanosciences Institute at the University of California Berkeley and Lawrence Berkeley National Laboratory, Berkeley, CA (United States)
II. Institute of Physics, University of Cologne, Zülpicher Str. 77 50937 Cologne Germany

In this study, we investigate the N = 9 atoms wide armchair-type graphene nanoribbons (9-AGNRs) by performing a comprehensive spectroscopic and microscopic characterization of this novel material. In particular, we use X-ray photoelectron, near edge X-ray absorption fine structure, scanning tunneling, polarized Raman and angle-resolved photoemission (ARPES) spectroscopies. The ARPES measurements are aided by calculations of the photoemission matrix elements which yield the position in k space having the strongest photoemission cross section. Comparison with well-studied narrow N = 7 AGNRs shows that the effective electron mass in 9-AGNRs is reduced by two times and the valence band maximum is shifted to lower binding energy by ~0.6 eV. In polarized Raman measurements of the aligned 9-AGNR, we reveal anisotropic signal depending upon the phonon symmetry. To conclude, our results indicate the 9-AGNRs are a novel 1D semiconductor with a high potential in nanoelectronic applications.

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Research Organization:: Lawrence Berkeley National Laboratory (LBNL), Berkeley, CA (United States)

Sponsoring Organization:: USDOE Office of Science (SC), Basic Energy Sciences (BES)

Grant/Contract Number:: AC02-05CH11231; SC0010409

OSTI ID:: 1437964

Alternate ID(s):: OSTI ID: 1375533

Journal Information:: Physica Status Solidi. Rapid Research Letters, Vol. 11, Issue 8; Related Information: © 2017 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim; ISSN 1862-6254

Country of Publication:: United States

Language:: English

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Cited by: 10 works

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36 MATERIALS SCIENCE
75 CONDENSED MATTER PHYSICS
SUPERCONDUCTIVITY AND SUPERFLUIDITY
angle-resolved photoelectron spectroscopy
graphene
nanoribbons
near edge X-ray absorption fine structure spectroscopy
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Title: Spectroscopic characterization of N = 9 armchair graphene nanoribbons

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