Antiferromagnetic semimetal terahertz photodetectors enhanced through weak localization
Abstract Effective detection is critical for terahertz applications, yet it remains hindered by the unclear mechanisms that necessitate a deeper understanding of photosensitive materials with exotic physical phenomena. Here, we investigate the terahertz detection capabilities of the two-dimensional...
Saved in:
| Main Authors: | , , , , , , , , , , , , , , , , , |
|---|---|
| Format: | Article |
| Language: | English |
| Published: |
Nature Portfolio
2025-01-01
|
| Series: | Nature Communications |
| Online Access: | https://doi.org/10.1038/s41467-024-55426-0 |
| Tags: |
Add Tag
No Tags, Be the first to tag this record!
|
| _version_ | 1841559248792715264 |
|---|---|
| author | Dong Wang Liu Yang Zhen Hu Fang Wang Yage Yang Xiaokai Pan Zhuo Dong Shijian Tian Libo Zhang Li Han Mengjie Jiang Keqin Tang Fuxing Dai Kai Zhang Wei Lu Xiaoshuang Chen Lin Wang Weida Hu |
| author_facet | Dong Wang Liu Yang Zhen Hu Fang Wang Yage Yang Xiaokai Pan Zhuo Dong Shijian Tian Libo Zhang Li Han Mengjie Jiang Keqin Tang Fuxing Dai Kai Zhang Wei Lu Xiaoshuang Chen Lin Wang Weida Hu |
| author_sort | Dong Wang |
| collection | DOAJ |
| description | Abstract Effective detection is critical for terahertz applications, yet it remains hindered by the unclear mechanisms that necessitate a deeper understanding of photosensitive materials with exotic physical phenomena. Here, we investigate the terahertz detection capabilities of the two-dimensional antiferromagnetic semimetal NbFeTe2. Our study reveals that the interaction between antiferromagnetic magnetic moments and electron spin induces disordered carriers to hop between localized states, resulting in a nonlinear increase in responsivity as temperature decreases. We integrate asymmetric electrodes to generate a sufficient Seebeck potential, enabling carriers to overcome the barrier of localized states and achieve reordering at room temperature. Additionally, the self-powered performance of the NbFeTe₂/graphene heterojunction is optimized by the built-in electric field, achieving peak responsivity of 220 V W-1 and noise equivalent power of <20 pW Hz-1/2. These results shed light on the potential of antiferromagnetic semimetals in large-area, high-speed imaging applications, marking a significant advancement in terahertz photonics. |
| format | Article |
| id | doaj-art-e1fc630fd84a4ca58e07d066a847b846 |
| institution | Kabale University |
| issn | 2041-1723 |
| language | English |
| publishDate | 2025-01-01 |
| publisher | Nature Portfolio |
| record_format | Article |
| series | Nature Communications |
| spelling | doaj-art-e1fc630fd84a4ca58e07d066a847b8462025-01-05T12:39:57ZengNature PortfolioNature Communications2041-17232025-01-0116111010.1038/s41467-024-55426-0Antiferromagnetic semimetal terahertz photodetectors enhanced through weak localizationDong Wang0Liu Yang1Zhen Hu2Fang Wang3Yage Yang4Xiaokai Pan5Zhuo Dong6Shijian Tian7Libo Zhang8Li Han9Mengjie Jiang10Keqin Tang11Fuxing Dai12Kai Zhang13Wei Lu14Xiaoshuang Chen15Lin Wang16Weida Hu17State Key Laboratory for Infrared Physics, Shanghai Institute of Technical Physics, Chinese Academy of SciencesSchool of Nano-Tech and Nano-Bionics, University of Science and Technology of ChinaState Key Laboratory for Infrared Physics, Shanghai Institute of Technical Physics, Chinese Academy of SciencesState Key Laboratory for Infrared Physics, Shanghai Institute of Technical Physics, Chinese Academy of SciencesUniversity of Chinese Academy of SciencesState Key Laboratory for Infrared Physics, Shanghai Institute of Technical Physics, Chinese Academy of SciencesCAS Key Laboratory of Nanophotonic Materials and Devices & Key Laboratory of Nanodevices and Applications, i-Lab, Suzhou Institute of Nano-Tech and Nano-Bionics (SINANO), Chinese Academy of SciencesDepartment of Optoelectronic Science and Engineering, Donghua UniversityState Key Laboratory for Infrared Physics, Shanghai Institute of Technical Physics, Chinese Academy of SciencesCollege of Optical and Electronic Technology, China Jiliang UniversityState Key Laboratory for Infrared Physics, Shanghai Institute of Technical Physics, Chinese Academy of SciencesSchool of Nano-Tech and Nano-Bionics, University of Science and Technology of ChinaState Key Laboratory for Infrared Physics, Shanghai Institute of Technical Physics, Chinese Academy of SciencesCAS Key Laboratory of Nanophotonic Materials and Devices & Key Laboratory of Nanodevices and Applications, i-Lab, Suzhou Institute of Nano-Tech and Nano-Bionics (SINANO), Chinese Academy of SciencesState Key Laboratory for Infrared Physics, Shanghai Institute of Technical Physics, Chinese Academy of SciencesState Key Laboratory for Infrared Physics, Shanghai Institute of Technical Physics, Chinese Academy of SciencesState Key Laboratory for Infrared Physics, Shanghai Institute of Technical Physics, Chinese Academy of SciencesState Key Laboratory for Infrared Physics, Shanghai Institute of Technical Physics, Chinese Academy of SciencesAbstract Effective detection is critical for terahertz applications, yet it remains hindered by the unclear mechanisms that necessitate a deeper understanding of photosensitive materials with exotic physical phenomena. Here, we investigate the terahertz detection capabilities of the two-dimensional antiferromagnetic semimetal NbFeTe2. Our study reveals that the interaction between antiferromagnetic magnetic moments and electron spin induces disordered carriers to hop between localized states, resulting in a nonlinear increase in responsivity as temperature decreases. We integrate asymmetric electrodes to generate a sufficient Seebeck potential, enabling carriers to overcome the barrier of localized states and achieve reordering at room temperature. Additionally, the self-powered performance of the NbFeTe₂/graphene heterojunction is optimized by the built-in electric field, achieving peak responsivity of 220 V W-1 and noise equivalent power of <20 pW Hz-1/2. These results shed light on the potential of antiferromagnetic semimetals in large-area, high-speed imaging applications, marking a significant advancement in terahertz photonics.https://doi.org/10.1038/s41467-024-55426-0 |
| spellingShingle | Dong Wang Liu Yang Zhen Hu Fang Wang Yage Yang Xiaokai Pan Zhuo Dong Shijian Tian Libo Zhang Li Han Mengjie Jiang Keqin Tang Fuxing Dai Kai Zhang Wei Lu Xiaoshuang Chen Lin Wang Weida Hu Antiferromagnetic semimetal terahertz photodetectors enhanced through weak localization Nature Communications |
| title | Antiferromagnetic semimetal terahertz photodetectors enhanced through weak localization |
| title_full | Antiferromagnetic semimetal terahertz photodetectors enhanced through weak localization |
| title_fullStr | Antiferromagnetic semimetal terahertz photodetectors enhanced through weak localization |
| title_full_unstemmed | Antiferromagnetic semimetal terahertz photodetectors enhanced through weak localization |
| title_short | Antiferromagnetic semimetal terahertz photodetectors enhanced through weak localization |
| title_sort | antiferromagnetic semimetal terahertz photodetectors enhanced through weak localization |
| url | https://doi.org/10.1038/s41467-024-55426-0 |
| work_keys_str_mv | AT dongwang antiferromagneticsemimetalterahertzphotodetectorsenhancedthroughweaklocalization AT liuyang antiferromagneticsemimetalterahertzphotodetectorsenhancedthroughweaklocalization AT zhenhu antiferromagneticsemimetalterahertzphotodetectorsenhancedthroughweaklocalization AT fangwang antiferromagneticsemimetalterahertzphotodetectorsenhancedthroughweaklocalization AT yageyang antiferromagneticsemimetalterahertzphotodetectorsenhancedthroughweaklocalization AT xiaokaipan antiferromagneticsemimetalterahertzphotodetectorsenhancedthroughweaklocalization AT zhuodong antiferromagneticsemimetalterahertzphotodetectorsenhancedthroughweaklocalization AT shijiantian antiferromagneticsemimetalterahertzphotodetectorsenhancedthroughweaklocalization AT libozhang antiferromagneticsemimetalterahertzphotodetectorsenhancedthroughweaklocalization AT lihan antiferromagneticsemimetalterahertzphotodetectorsenhancedthroughweaklocalization AT mengjiejiang antiferromagneticsemimetalterahertzphotodetectorsenhancedthroughweaklocalization AT keqintang antiferromagneticsemimetalterahertzphotodetectorsenhancedthroughweaklocalization AT fuxingdai antiferromagneticsemimetalterahertzphotodetectorsenhancedthroughweaklocalization AT kaizhang antiferromagneticsemimetalterahertzphotodetectorsenhancedthroughweaklocalization AT weilu antiferromagneticsemimetalterahertzphotodetectorsenhancedthroughweaklocalization AT xiaoshuangchen antiferromagneticsemimetalterahertzphotodetectorsenhancedthroughweaklocalization AT linwang antiferromagneticsemimetalterahertzphotodetectorsenhancedthroughweaklocalization AT weidahu antiferromagneticsemimetalterahertzphotodetectorsenhancedthroughweaklocalization |