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El-Sayed, A. Piquero-Zulaica, I. Abd El-Fattah, ZM. Kormos, L. Ali, K. Weber, A. Brede, J. de Oteyza, DG. Lobo-Checa, J. Ortega, JE. Corso, M
Originální název
Synthesis of Graphene Nanoribbons on a Kinked Au Surface: Revealing the Frontier Valence Band at the Brillouin Zone Center
Typ
článek v časopise ve Web of Science, Jimp
Jazyk
angličtina
Originální abstrakt
Graphene nanoribbons (GNRs) can be synthesized with atomic precision through on-surface chemistry of self-assembled organic precursors on metal surfaces. Here, we examine the growth of seven-armchair GNRs (7-AGNRs) on the Au(16 14 15) vicinal surface, namely, a surface vicinal to Au(111) that features kinked steps. During the thermal activation of the polymerization and cyclodehydrogenation processes that produce the GNRs, the kinked substrate undergoes a strong step-edge reshaping, accompanied by a massive missing-row reconstruction within (111) terraces that aligns GNRs preferentially along two equivalent [1 (1) over bar0] directions. Using angle-resolved photoemission, we are able to detect the occupied frontier band of the 7-AGNR at the center of the first Brillouin zone, as predicted by theoretical calculations. This allows to unambiguously determine the relevant 7-AGNR band properties, namely, energy and effective mass.
Klíčová slova
Graphene Nanoribons; Surfaces, ARPES
Autoři
El-Sayed, A.; Piquero-Zulaica, I.; Abd El-Fattah, ZM.; Kormos, L.; Ali, K.; Weber, A.; Brede, J.; de Oteyza, DG. ; Lobo-Checa, J.; Ortega, JE.; Corso, M
Vydáno
16. 7. 2020
Nakladatel
AMER CHEMICAL SOC
Místo
WASHINGTON
ISSN
1932-7455
Periodikum
Journal of Physical Chemistry C (web)
Ročník
124
Číslo
28
Stát
Spojené státy americké
Strany od
15474
Strany do
15480
Strany počet
7
URL
https://pubs.acs.org/doi/abs/10.1021/acs.jpcc.0c02801
BibTex
@article{BUT165424, author="El-Sayed, A. and Piquero-Zulaica, I. and Abd El-Fattah, ZM. and Kormos, L. and Ali, K. and Weber, A. and Brede, J. and de Oteyza, DG. and Lobo-Checa, J. and Ortega, JE. and Corso, M", title="Synthesis of Graphene Nanoribbons on a Kinked Au Surface: Revealing the Frontier Valence Band at the Brillouin Zone Center", journal="Journal of Physical Chemistry C (web)", year="2020", volume="124", number="28", pages="15474--15480", doi="10.1021/acs.jpcc.0c02801", issn="1932-7455", url="https://pubs.acs.org/doi/abs/10.1021/acs.jpcc.0c02801" }