• Chinese Physics B
  • Vol. 29, Issue 9, (2020)
Changlin Yan1、2, Cong Wang2, Linwei Zhou2, Pengjie Guo2, Kai Liu2, Zhong-Yi Lu2, Zhihai Cheng2, Yang Chai3, Anlian Pan4, and Wei Ji2、†
Author Affiliations
  • 1School of Physics and Electronics, Hunan University, Changsha 40082, China
  • 2Beijing Key Laboratory of Optoelectronic Functional Materials & Micro-Nano Devices, Department of Physics, Renmin University of China, Beijing 10087, China
  • 3The Hong Kong Polytechnic University, Hung Hom, Kowloon, Hong Kong, China
  • 4Key Laboratory for Micro-Nano Physics and Technology of Hunan Province, College of Materials Science and Engineering, Hunan University, Changsha 10082, China
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    DOI: 10.1088/1674-1056/aba606 Cite this Article
    Changlin Yan, Cong Wang, Linwei Zhou, Pengjie Guo, Kai Liu, Zhong-Yi Lu, Zhihai Cheng, Yang Chai, Anlian Pan, Wei Ji. Two ultra-stable novel allotropes of tellurium few-layers[J]. Chinese Physics B, 2020, 29(9): Copy Citation Text show less

    Abstract

    At least four two- or quasi-one-dimensional allotropes and a mixture of them were theoretically predicted or experimentally observed for low-dimensional Te, namely the α, β, γ, δ, and chiral-α + δ phases. Among them the γ and α phases were found to be the most stable phases for monolayer and thicker layers, respectively. Here, we found two novel low-dimensional phases, namely the ε and ζ phases. The ζ phase is over 29 meV/Te more stable than the most stable monolayer γ phase, and the ε phase shows comparable stability with the most stable monolayer γ phase. The energetic difference between the ζ and α phases reduces with respect to the increased layer thickness and vanishes at the four-layer (12-sublayer) thickness, while this thickness increases under change doping. Both ε and ζ phases are metallic chains and layers, respectively. The ζ phase, with very strong interlayer coupling, shows quantum well states in its layer-dependent bandstructures. These results provide significantly insight into the understanding of polytypism in Te few-layers and may boost tremendous studies on properties of various few-layer phases.
    Changlin Yan, Cong Wang, Linwei Zhou, Pengjie Guo, Kai Liu, Zhong-Yi Lu, Zhihai Cheng, Yang Chai, Anlian Pan, Wei Ji. Two ultra-stable novel allotropes of tellurium few-layers[J]. Chinese Physics B, 2020, 29(9):
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