@article{10902/34977,
year = {2020},
month = {10},
url = {https://hdl.handle.net/10902/34977},
abstract = {The electronic properties of graphene nanoribbons (GNRs) can be precisely tuned by chemical doping. Here we demonstrate that amino (NH₂) functional groups attached at the edges of chiral GNRs (chGNRs) can efficiently gate the chGNRs and lead to the valence band (VB) depopulation on a metallic surface. The NH₂-doped chGNRs are grown by on-surface synthesis on Au(111) using functionalized bianthracene precursors. Scanning tunneling spectroscopy resolves that the NH₂ groups significantly upshift the bands of chGNRs, causing the Fermi level crossing of the VB onset of chGNRs. Through density functional theory simulations we confirm that the hole-doping behavior is due to an upward shift of the bands induced by the edge NH₂ groups.},
organization = {We acknowledge financial support from: i) AEI/FEDER-EU through grants no. MAT2016-78293-C6, FIS2017-83780-P (AEI/FEDER,EU), the Maria de Maeztu unit of excellence MDM-2016-0618, and the Severo Ochoa program (ICN2) SEV-2017-0706; ii) the European Research Council (grant agreement no. 635919); iii) the Xunta de Galicia (Centro singular de investigación de Galicia, accreditation 20162019, ED431G/09); iv) the EU project SPRING (863098); v) the European Regional Development Fund (ERDF) under the program Interreg V-A España-Francia-Andorra (Contract No. EFA 194/16 TNI), vi) the CERCA Program/Generalitat de Catalunya, and vii) the Gobierno Vasco-UPV/EHU (project IT1246-19).},
publisher = {American Chemical Society},
publisher = {ACS Nano, 2020, 14(2), 1895-1901},
title = {Band depopulation of graphene nanoribbons induced by chemical gating with amino groups},
author = {Li, Jingcheng and Brandimarte Mendonça, Pedro and Vilas Varela, Manuel and Merino Díez, Nestor and Moreno Sierra, César and Mugarza, Aitor and Sáez Mollejo, Jaime and Sanchez-Portal, Daniel and Garcia de Oteyza, Dimas and Corso, Martina and Garcia-Lekue, Aran and Peña, Diego and Pascual, José I.},
}