Phase Transition Photodetection in Charge Density Wave Tantalum DisulfideClick to copy article linkArticle link copied!
- Chunhe DangChunhe DangCAS Key Laboratory of Standardization and Measurement for Nanotechnology, CAS Center for Excellence in Nanoscience, National Center for Nanoscience and Technology, Beijing 100190, P.R. ChinaUniversity of Chinese Academy of Sciences, Beijing 100049, P.R. ChinaDepartment of Chemistry, Tsinghua University, Beijing 100084, P.R. ChinaMore by Chunhe Dang
- Mengxue GuanMengxue GuanBeijing National Laboratory for Condensed Matter Physics, Institute of Physics, Chinese Academy of Sciences, Beijing 100190, P.R. ChinaMore by Mengxue Guan
- Sabir HussainSabir HussainCAS Key Laboratory of Standardization and Measurement for Nanotechnology, CAS Center for Excellence in Nanoscience, National Center for Nanoscience and Technology, Beijing 100190, P.R. ChinaUniversity of Chinese Academy of Sciences, Beijing 100049, P.R. ChinaMore by Sabir Hussain
- Wen WenWen WenCAS Key Laboratory of Standardization and Measurement for Nanotechnology, CAS Center for Excellence in Nanoscience, National Center for Nanoscience and Technology, Beijing 100190, P.R. ChinaUniversity of Chinese Academy of Sciences, Beijing 100049, P.R. ChinaMore by Wen Wen
- Yiming ZhuYiming ZhuCAS Key Laboratory of Standardization and Measurement for Nanotechnology, CAS Center for Excellence in Nanoscience, National Center for Nanoscience and Technology, Beijing 100190, P.R. ChinaMore by Yiming Zhu
- Liying JiaoLiying JiaoDepartment of Chemistry, Tsinghua University, Beijing 100084, P.R. ChinaMore by Liying Jiao
- Sheng MengSheng MengBeijing National Laboratory for Condensed Matter Physics, Institute of Physics, Chinese Academy of Sciences, Beijing 100190, P.R. ChinaMore by Sheng Meng
- Liming Xie*Liming Xie*Email: [email protected]CAS Key Laboratory of Standardization and Measurement for Nanotechnology, CAS Center for Excellence in Nanoscience, National Center for Nanoscience and Technology, Beijing 100190, P.R. ChinaUniversity of Chinese Academy of Sciences, Beijing 100049, P.R. ChinaMore by Liming Xie
Abstract
![Abstract Image](/cms/10.1021/acs.nanolett.0c02613/asset/images/medium/nl0c02613_0006.gif)
The charge density wave (CDW) phase is a macroscopic quantum state with periodic charge density modulation accompanied by periodic lattice distortion in low-dimensional metals. External fields, such as an electric field and optical excitation, can trigger the transitions among different CDW states, leaving an under-explored mechanism and attracting great interest toward optoelectronic applications. Here, we explore a photoinduced phase transition in 1T-TaS2 under an electrical field. By analyzing the phase transition probability, we obtained a linear dependence of the phase transition barrier on the electric field and laser energy density. Additionally, the threshold laser energy for the phase transition decreases linearly with an increasing applied electrical field. Finally, picojoule photodetection was realized in the visible and near-infrared ranges near the CDW transition edge. Our work will promote the understanding of the CDW phase transition mechanism as well as open pathways for optoelectronic applications.
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