Your browser doesn't support javascript.
loading
Tunable Room-Temperature Ferromagnetism in Two-Dimensional Cr2Te3.
Wen, Yao; Liu, Zhehong; Zhang, Yu; Xia, Congxin; Zhai, Baoxing; Zhang, Xinhui; Zhai, Guihao; Shen, Chao; He, Peng; Cheng, Ruiqing; Yin, Lei; Yao, Yuyu; Getaye Sendeku, Marshet; Wang, Zhenxing; Ye, Xubing; Liu, Chuansheng; Jiang, Chao; Shan, Chongxin; Long, Youwen; He, Jun.
Affiliation
  • Wen Y; School of Physics and Technology, Wuhan University, Wuhan 430072, China.
  • Liu Z; Beijing National Laboratory for Condensed Matter Physics, Institute of Physics, University of Chinese Academy of Sciences, Beijing 100049, China.
  • Zhang Y; School of Physics and Technology, Wuhan University, Wuhan 430072, China.
  • Xia C; Department of Physics, Henan Normal University, Xinxiang 453007, China.
  • Zhai B; Department of Physics, Henan Normal University, Xinxiang 453007, China.
  • Zhang X; State Key Laboratory of Superlattices and Microstructures, Institute of Semiconductors, University of Chinese Academy of Sciences, Beijing 100049, China.
  • Zhai G; State Key Laboratory of Superlattices and Microstructures, Institute of Semiconductors, University of Chinese Academy of Sciences, Beijing 100049, China.
  • Shen C; State Key Laboratory of Superlattices and Microstructures, Institute of Semiconductors, University of Chinese Academy of Sciences, Beijing 100049, China.
  • He P; CAS Center for Excellence in Nanoscience, National Center for Nanoscience and Technology, University of Chinese Academy of Sciences, Beijing 100049, China.
  • Cheng R; CAS Center for Excellence in Nanoscience, National Center for Nanoscience and Technology, University of Chinese Academy of Sciences, Beijing 100049, China.
  • Yin L; CAS Center for Excellence in Nanoscience, National Center for Nanoscience and Technology, University of Chinese Academy of Sciences, Beijing 100049, China.
  • Yao Y; CAS Center for Excellence in Nanoscience, National Center for Nanoscience and Technology, University of Chinese Academy of Sciences, Beijing 100049, China.
  • Getaye Sendeku M; CAS Center for Excellence in Nanoscience, National Center for Nanoscience and Technology, University of Chinese Academy of Sciences, Beijing 100049, China.
  • Wang Z; CAS Center for Excellence in Nanoscience, National Center for Nanoscience and Technology, University of Chinese Academy of Sciences, Beijing 100049, China.
  • Ye X; Beijing National Laboratory for Condensed Matter Physics, Institute of Physics, University of Chinese Academy of Sciences, Beijing 100049, China.
  • Liu C; School of Physics and Technology, Wuhan University, Wuhan 430072, China.
  • Jiang C; CAS Center for Excellence in Nanoscience, National Center for Nanoscience and Technology, University of Chinese Academy of Sciences, Beijing 100049, China.
  • Shan C; Henan Key Laboratory of Diamond Optoelectronic Materials and Devices, School of Physics and Engineering, Zhengzhou University, Zhengzhou 450052, China.
  • Long Y; Beijing National Laboratory for Condensed Matter Physics, Institute of Physics, University of Chinese Academy of Sciences, Beijing 100049, China.
  • He J; Songshan Lake Materials Laboratory, Dongguan, Guangdong 523808, China.
Nano Lett ; 20(5): 3130-3139, 2020 May 13.
Article in En | MEDLINE | ID: mdl-32338924
ABSTRACT
The manipulation of magnetism provides a unique opportunity for the development of data storage and spintronic applications. Until now, electrical control, pressure tuning, stacking structure dependence, and nanoscale engineering have been realized. However, as the dimensions are decreased, the decrease of the ferromagnetism phase transition temperature (Tc) is a universal trend in ferromagnets. Here, we make a breakthrough to realize the synthesis of 1 and 2 unit cell (UC) Cr2Te3 and discover a room-temperature ferromagnetism in two-dimensional Cr2Te3. The newly observed Tc increases strongly from 160 K in the thick flake (40.3 nm) to 280 K in 6 UC Cr2Te3 (7.1 nm). The magnetization and anomalous Hall effect measurements provided unambiguous evidence for the existence of spontaneous magnetization at room temperature. The theoretical model revealed that the reconstruction of Cr2Te3 could result in anomalous thickness-dependent Tc. This dimension tuning method opens up a new avenue for manipulation of ferromagnetism.
Key words
Fulltext
Add to My VHL
Print
XML
PubMed Links
Search on Google

Full text: 1 Collection: 01-internacional Database: MEDLINE Language: En Journal: Nano Lett Year: 2020 Document type: Article Affiliation country: China
Fulltext
Add to My VHL
Print
XML
PubMed Links
Search on Google

Full text: 1 Collection: 01-internacional Database: MEDLINE Language: En Journal: Nano Lett Year: 2020 Document type: Article Affiliation country: China