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Moiré Superstructure and Dimensional Crossover of 2D Electronic States on Nanoscale Lead Quantum Films

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Title
Moiré Superstructure and Dimensional Crossover of 2D Electronic States on Nanoscale Lead Quantum Films
Author(s)
Hyo Sung Kim; Gyeongcheol Gye; Sung-Hoon Lee; Lihai Wang; Sang-Wook Cheong; Han Woong Yeom
Publication Date
2017-10
Journal
SCIENTIFIC REPORTS, v.7, no.1, pp.12735
Publisher
NATURE PUBLISHING GROUP
Abstract
We investigate using scanning tunneling microscopy and spectroscopy electronic aspects of Moiré superstructures in nanoscale Pb quantum films grown on IrTe2, which is a unique layered material with charge-order transitions into stripe phases. Pb ultrathin films exhibit a Moiré superstructure due to the lattice mismatch of Pb and IrTe2, which produces strong lateral electronic modulation of hexagonal symmetry and discreet subbands. Moreover, strongly anisotropic or 1D electronic states are formed in Pb films as modulated by the stripe charge order. Present results indicate the controllability of lateral electronic structures of various ultrathin films by extra interfacial potentials due not only to Moiré superstructures but also to novel electronic orderings of substrates. © 2017 The Author(s)
URI
https://pr.ibs.re.kr/handle/8788114/4027
DOI
10.1038/s41598-017-12851-0
ISSN
2045-2322
Appears in Collections:
Center for Artificial Low Dimensional Electronic Systems(원자제어 저차원 전자계 연구단) > 1. Journal Papers (저널논문)
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