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Tuning 2D magnetism in Fe3+XGeTe2 films by element doping.
Liu, Shanshan; Li, Zihan; Yang, Ke; Zhang, Enze; Narayan, Awadhesh; Zhang, Xiaoqian; Zhu, Jiayi; Liu, Wenqing; Liao, Zhiming; Kudo, Masaki; Toriyama, Takaaki; Yang, Yunkun; Li, Qiang; Ai, Linfeng; Huang, Ce; Sun, Jiabao; Guo, Xiaojiao; Bao, Wenzhong; Deng, Qingsong; Chen, Yanhui; Yin, Lifeng; Shen, Jian; Han, Xiaodong; Matsumura, Syo; Zou, Jin; Xu, Yongbing; Xu, Xiaodong; Wu, Hua; Xiu, Faxian.
Afiliação
  • Liu S; State Key Laboratory of Surface Physics and Department of Physics, Fudan University, Shanghai 200433, China.
  • Li Z; State Key Laboratory of Surface Physics and Department of Physics, Fudan University, Shanghai 200433, China.
  • Yang K; College of Science, University of Shanghai for Science and Technology, Shanghai 200093, China.
  • Zhang E; State Key Laboratory of Surface Physics and Department of Physics, Fudan University, Shanghai 200433, China.
  • Narayan A; Solid State and Structural Chemistry Unit, Indian Institute of Science, Bangalore 560012, India.
  • Zhang X; School of Electronic Science and Engineering, Nanjing University, Nanjing 210093, China.
  • Zhu J; Department of Physics, University of Washington, Seattle, WA 98195-1560, USA.
  • Liu W; Department of Electronic Engineering, Royal Holloway University of London, Egham TW20 0EX, UK.
  • Liao Z; Materials Engineering, The University of Queensland, Brisbane QLD 4072, Australia.
  • Kudo M; The Ultramicroscopy Research Center, Kyushu University, Fukuoka 819-0395, Japan.
  • Toriyama T; The Ultramicroscopy Research Center, Kyushu University, Fukuoka 819-0395, Japan.
  • Yang Y; State Key Laboratory of Surface Physics and Department of Physics, Fudan University, Shanghai 200433, China.
  • Li Q; State Key Laboratory of Surface Physics and Department of Physics, Fudan University, Shanghai 200433, China.
  • Ai L; State Key Laboratory of Surface Physics and Department of Physics, Fudan University, Shanghai 200433, China.
  • Huang C; State Key Laboratory of Surface Physics and Department of Physics, Fudan University, Shanghai 200433, China.
  • Sun J; Department of Electronic Engineering, Royal Holloway University of London, Egham TW20 0EX, UK.
  • Guo X; State Key Laboratory of ASIC and System, School of Microelectronics, Fudan University, Shanghai 200433, China.
  • Bao W; State Key Laboratory of ASIC and System, School of Microelectronics, Fudan University, Shanghai 200433, China.
  • Deng Q; Beijing Key Laboratory of Microstructure and Property of Advanced Materials, Institute of Microstructure and Property of Advanced Materials, Beijing University of Technology, Beijing 100124, China.
  • Chen Y; Beijing Key Laboratory of Microstructure and Property of Advanced Materials, Institute of Microstructure and Property of Advanced Materials, Beijing University of Technology, Beijing 100124, China.
  • Yin L; State Key Laboratory of Surface Physics and Department of Physics, Fudan University, Shanghai 200433, China.
  • Shen J; State Key Laboratory of Surface Physics and Department of Physics, Fudan University, Shanghai 200433, China.
  • Han X; Beijing Key Laboratory of Microstructure and Property of Advanced Materials, Institute of Microstructure and Property of Advanced Materials, Beijing University of Technology, Beijing 100124, China.
  • Matsumura S; The Ultramicroscopy Research Center, Kyushu University, Fukuoka 819-0395, Japan.
  • Zou J; Materials Engineering, The University of Queensland, Brisbane QLD 4072, Australia.
  • Xu Y; School of Electronic Science and Engineering, Nanjing University, Nanjing 210093, China.
  • Xu X; Department of Physics, University of Washington, Seattle, WA 98195-1560, USA.
  • Wu H; State Key Laboratory of Surface Physics and Department of Physics, Fudan University, Shanghai 200433, China.
  • Xiu F; State Key Laboratory of Surface Physics and Department of Physics, Fudan University, Shanghai 200433, China.
Natl Sci Rev ; 9(6): nwab117, 2022 Jun.
Article em En | MEDLINE | ID: mdl-35822066
ABSTRACT
Two-dimensional (2D) ferromagnetic materials have been discovered with tunable magnetism and orbital-driven nodal-line features. Controlling the 2D magnetism in exfoliated nanoflakes via electric/magnetic fields enables a boosted Curie temperature (T C) or phase transitions. One of the challenges, however, is the realization of high T C 2D magnets that are tunable, robust and suitable for large scale fabrication. Here, we report molecular-beam epitaxy growth of wafer-scale Fe3+XGeTe2 films with T C above room temperature. By controlling the Fe composition in Fe3+XGeTe2, a continuously modulated T C in a broad range of 185-320 K has been achieved. This widely tunable T C is attributed to the doped interlayer Fe that provides a 40% enhancement around the optimal composition X = 2. We further fabricated magnetic tunneling junction device arrays that exhibit clear tunneling signals. Our results show an effective and reliable approach, i.e. element doping, to producing robust and tunable ferromagnetism beyond room temperature in a large-scale 2D Fe3+XGeTe2 fashion.
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Texto completo: 1 Coleções: 01-internacional Base de dados: MEDLINE Idioma: En Revista: Natl Sci Rev Ano de publicação: 2022 Tipo de documento: Article País de afiliação: China
Texto completo
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PubMed Links
Buscar no Google

Texto completo: 1 Coleções: 01-internacional Base de dados: MEDLINE Idioma: En Revista: Natl Sci Rev Ano de publicação: 2022 Tipo de documento: Article País de afiliação: China