Journal article
Prediction of intrinsic two-dimensional ferroelectrics in In 2 Se 3 and other III 2 -VI 3 van der Waals materials
Nature communications, Vol.8, p.14956
04/07/2017
Handle:
https://hdl.handle.net/2376/114287
PMID: 28387225
Abstract
Interest in two-dimensional (2D) van der Waals materials has grown rapidly across multiple scientific and engineering disciplines in recent years. However, ferroelectricity, the presence of a spontaneous electric polarization, which is important in many practical applications, has rarely been reported in such materials so far. Here we employ first-principles calculations to discover a branch of the 2D materials family, based on In
Se
and other III
-VI
van der Waals materials, that exhibits room-temperature ferroelectricity with reversible spontaneous electric polarization in both out-of-plane and in-plane orientations. The device potential of these 2D ferroelectric materials is further demonstrated using the examples of van der Waals heterostructures of In
Se
/graphene, exhibiting a tunable Schottky barrier, and In
Se
/WSe
, showing a significant band gap reduction in the combined system. These findings promise to substantially broaden the tunability of van der Waals heterostructures for a wide range of applications.
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Details
- Title
- Prediction of intrinsic two-dimensional ferroelectrics in In 2 Se 3 and other III 2 -VI 3 van der Waals materials
- Creators
- Wenjun Ding - Key Laboratory of Strongly-Coupled Quantum Matter Physics, Chinese Academy of Sciences, School of Physical Sciences, University of Science and Technology of China, Hefei, Anhui 230026, ChinaJianbao Zhu - Beijing Computational Science Research Center, Beijing 100084, ChinaZhe Wang - Key Laboratory of Strongly-Coupled Quantum Matter Physics, Chinese Academy of Sciences, School of Physical Sciences, University of Science and Technology of China, Hefei, Anhui 230026, ChinaYanfei Gao - Materials Science and Technology Division, Oak Ridge National Laboratory, Oak Ridge, Tennessee 37831, USADi Xiao - Department of Physics, Carnegie Mellon University, Pittsburgh, Pennsylvania 15213, USAYi Gu - Department of Physics and Astronomy, Washington State University, Pullman, Washington 99164, USAZhenyu Zhang - International Center for Quantum Design of Functional Materials (ICQD), Hefei National Laboratory for Physical Sciences at the Microscale, and Synergetic Innovation Center of Quantum Information and Quantum Physics, University of Science and Technology of China, Hefei, Anhui 230026, ChinaWenguang Zhu - Key Laboratory of Strongly-Coupled Quantum Matter Physics, Chinese Academy of Sciences, School of Physical Sciences, University of Science and Technology of China, Hefei, Anhui 230026, China
- Publication Details
- Nature communications, Vol.8, p.14956
- Academic Unit
- Physics and Astronomy, Department of
- Publisher
- England
- Identifiers
- 99900548011901842
- Language
- English
- Resource Type
- Journal article