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나노 구조 물리 연구단
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Absorption dichroism of monolayer 1T’-MoTe2 in visible range

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Title
Absorption dichroism of monolayer 1T’-MoTe2 in visible range
Author(s)
Gang Hee Han; Dong Hoon Keum; Jiong Zhao; Bong Gyu Shin; Seunghyun Song; Jung Jun Bae; Jubok Lee; Jung Ho Kim; Hyun Kim; Byoung Hee Moon; Young Hee Lee
Publication Date
2016-09
Journal
2D Materials, v.3, no.3, pp.031010 -
Publisher
IOP PUBLISHING LTD
Abstract
Among various transition metal dichalcogenides, MoTe2 has drawn attention due to its capability of robust phase engineering between semiconducting (2H) and semi-metallic distorted octahedral (1T′) phase. In particular, 1T′-MoTe2 has been predicted to have intriguing physics such as quantum spin Hall insulator, large magnetoresistance, and superconductivity. Recent progress showed weak antilocalization behavior in 1T′-MoTe2 which is the one of representative characteristics in topological insulator. Here, we grow centimeter-scale monolayer 1T′-MoTe2 on SiO2/Si substrate via chemical vapordeposition and demonstrate dichroism in visible range. Ribbon-like 1T′-MoTe2 flakes were initially nucleated randomly on SiO2 substrate and at a later stage merged to form a continuous monolayer film over the entire substrate. Each flake revealed one dimensionalMo–Modimerization feature and anisotropic absorption behavior in visible range (400–600 nm). This allowed us to detect the grain boundary due to stark contrast difference among flakes in different orientations. ©2016 IOP Publishing Ltd
URI
https://pr.ibs.re.kr/handle/8788114/2863
ISSN
2053-1583
Appears in Collections:
Center for Integrated Nanostructure Physics(나노구조물리 연구단) > Journal Papers (저널논문)
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