Publication detail

Synthesis of Graphene Nanoribbons on a Kinked Au Surface: Revealing the Frontier Valence Band at the Brillouin Zone Center

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

Original Title

Synthesis of Graphene Nanoribbons on a Kinked Au Surface: Revealing the Frontier Valence Band at the Brillouin Zone Center

Type

journal article in Web of Science

Language

English

Original Abstract

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.

Keywords

Graphene Nanoribons; Surfaces, ARPES

Authors

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

Released

16. 7. 2020

Publisher

AMER CHEMICAL SOC

Location

WASHINGTON

ISBN

1932-7455

Periodical

Journal of Physical Chemistry C (web)

Year of study

124

Number

28

State

United States of America

Pages from

15474

Pages to

15480

Pages count

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"
}