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@ARTICLE{Zhang:856885,
author = {Zhang, Qiang and Yu, Jin and Ebert, Philipp and Zhang,
Chendong and Pan, Chi-Ruei and Chou, Mei-Yin and Shih,
Chih-Kang and Zeng, Changgan and Yuan, Shengjun},
title = {{T}uning {B}and {G}ap and {W}ork {F}unction {M}odulations
in {M}onolayer h{BN}/{C}u(111) {H}eterostructures with
{M}oiré {P}atterns},
journal = {ACS nano},
volume = {12},
number = {9},
issn = {1936-086X},
address = {Washington, DC},
publisher = {Soc.},
reportid = {FZJ-2018-06217},
pages = {9355 - 9362},
year = {2018},
abstract = {The moiré pattern formed between a two-dimensional (2D)
material and the substrate has played a crucial role in
tuning the electronic structure of the 2D material. Here, by
using scanning tunneling microscopy and spectroscopy, we
found a moiré-pattern-dependent band gap and work function
modulation in hexagonal boron nitride (hBN)/Cu(111)
heterostructures, whose amplitudes increase with the moiré
pattern wavelength. Moreover, the work function modulation
shifts agree well with the conduction band edge shifts,
indicating a spatially constant electron affinity for the
hBN layer. Density functional theory calculations showed
that these observations in hBN/Cu(111) heterostructures
mainly originated from the hybridization of the N 3pz
orbital and Cu 4s orbital in different atomic
configurations. Our results show that the twist-angle
dependence of moiré patterns in hBN/Cu(111)
heterostructures can be used to tailor the electronic
properties including band gap and work function.},
cin = {PGI-5},
ddc = {540},
cid = {I:(DE-Juel1)PGI-5-20110106},
pnm = {144 - Controlling Collective States (POF3-144)},
pid = {G:(DE-HGF)POF3-144},
typ = {PUB:(DE-HGF)16},
pubmed = {pmid:30107116},
UT = {WOS:000445972400054},
doi = {10.1021/acsnano.8b04444},
url = {https://juser.fz-juelich.de/record/856885},
}