Suppression of the Charge Density Wave State in Two‐Dimensional 1 T ‐TiSe 2 by Atmospheric Oxidation

Two‐dimensional (2D) metallic transition‐metal dichalcogenides (TMDCs), such as 1 T ‐TiSe 2 , have recently emerged as unique platforms for exploring their exciting properties of superconductivity and the charge density wave (CDW). 2D 1 T ‐TiSe 2 undergoes rapid oxidation under ambient conditions, s...

Full description

Saved in:
Bibliographic Details
Published in:Angewandte Chemie 2017-07, Vol.129 (31), p.9109-9113
Main Authors: Sun, Lifei, Chen, Chuanhui, Zhang, Qinghua, Sohrt, Christian, Zhao, Tianqi, Xu, Guanchen, Wang, Jinghui, Wang, Dong, Rossnagel, Kai, Gu, Lin, Tao, Chenggang, Jiao, Liying
Format: Article
Language:English
Citations: Items that this one cites
Items that cite this one
Online Access:Get full text
Tags: Add Tag
No Tags, Be the first to tag this record!
Description
Summary:Two‐dimensional (2D) metallic transition‐metal dichalcogenides (TMDCs), such as 1 T ‐TiSe 2 , have recently emerged as unique platforms for exploring their exciting properties of superconductivity and the charge density wave (CDW). 2D 1 T ‐TiSe 2 undergoes rapid oxidation under ambient conditions, significantly affecting its CDW phase‐transition behavior. We comprehensively investigate the oxidation process of 2D TiSe 2 by tracking the evolution of the chemical composition and atomic structure with various microscopic and spectroscopic techniques and reveal its unique selenium‐assisting oxidation mechanism. Our findings facilitate a better understanding of the chemistry of ultrathin TMDCs crystals, introduce an effective method to passivate their surfaces with capping layers, and thus open a way to further explore the functionality of these materials toward devices.
ISSN:0044-8249
1521-3757
DOI:10.1002/ange.201612605