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Enhanced Superconductivity and Upper Critical Field in Ta-Doped Weyl Semimetal Td -MoTe2.
Zhang, Yong; Fei, Fucong; Liu, Ruxin; Zhu, Tongshuai; Chen, Bo; Qiu, Tianyu; Zuo, Zewen; Guo, Jingwen; Tang, Wenchao; Zhou, Lifan; Xi, Xiaoxiang; Wu, Xiaoshan; Wu, Di; Zhong, Zhicheng; Song, Fengqi; Zhang, Rong; Wang, Xuefeng.
Affiliation
  • Zhang Y; Jiangsu Provincial Key Laboratory of Advanced Photonic and Electronic Materials, School of Electronic Science and Engineering, Collaborative Innovation Center of Advanced Microstructures, Nanjing University, Nanjing, 210093, China.
  • Fei F; National Laboratory of Solid State Microstructures, School of Physics, Nanjing University, Nanjing, 210093, China.
  • Liu R; Jiangsu Provincial Key Laboratory of Advanced Photonic and Electronic Materials, School of Electronic Science and Engineering, Collaborative Innovation Center of Advanced Microstructures, Nanjing University, Nanjing, 210093, China.
  • Zhu T; National Laboratory of Solid State Microstructures, School of Physics, Nanjing University, Nanjing, 210093, China.
  • Chen B; National Laboratory of Solid State Microstructures, School of Physics, Nanjing University, Nanjing, 210093, China.
  • Qiu T; National Laboratory of Solid State Microstructures, School of Physics, Nanjing University, Nanjing, 210093, China.
  • Zuo Z; National Laboratory of Solid State Microstructures, School of Physics, Nanjing University, Nanjing, 210093, China.
  • Guo J; National Laboratory of Solid State Microstructures, School of Physics, Nanjing University, Nanjing, 210093, China.
  • Tang W; National Laboratory of Solid State Microstructures, School of Physics, Nanjing University, Nanjing, 210093, China.
  • Zhou L; National Laboratory of Solid State Microstructures, School of Physics, Nanjing University, Nanjing, 210093, China.
  • Xi X; National Laboratory of Solid State Microstructures, School of Physics, Nanjing University, Nanjing, 210093, China.
  • Wu X; National Laboratory of Solid State Microstructures, School of Physics, Nanjing University, Nanjing, 210093, China.
  • Wu D; National Laboratory of Solid State Microstructures, School of Physics, Nanjing University, Nanjing, 210093, China.
  • Zhong Z; Key Laboratory of Magnetic Materials and Devices, Zhejiang Province Key Laboratory of Magnetic Materials and Application Technology, Ningbo Institute of Materials Technology and Engineering (NIMTE), Chinese Academy of Sciences, Ningbo, 315201, China.
  • Song F; National Laboratory of Solid State Microstructures, School of Physics, Nanjing University, Nanjing, 210093, China.
  • Zhang R; Jiangsu Provincial Key Laboratory of Advanced Photonic and Electronic Materials, School of Electronic Science and Engineering, Collaborative Innovation Center of Advanced Microstructures, Nanjing University, Nanjing, 210093, China.
  • Wang X; Department of Physics, Xiamen University, Xiamen, 316005, China.
Adv Mater ; 35(19): e2207841, 2023 May.
Article in En | MEDLINE | ID: mdl-36905678
ABSTRACT
2D transition metal dichalcogenides are promising platforms for next-generation electronics and spintronics. The layered Weyl semimetal (W,Mo)Te2 series features structural phase transition, nonsaturated magnetoresistance, superconductivity, and exotic topological physics. However, the superconducting critical temperature of the bulk (W,Mo)Te2 remains ultralow without applying a high pressure. Here, the significantly enhanced superconductivity is observed with a transition temperature as large as about 7.5 K in bulk Mo1- x Tax Te2 single crystals upon Ta doping (0 ≤ x ≤ 0.22), which is attributed to an enrichment of density of states at the Fermi level. In addition, an enhanced perpendicular upper critical field of 14.5 T exceeding the Pauli limit is also observed in Td -phase Mo1- x Tax Te2 (x = 0.08), indicating the possible emergence of unconventional mixed singlet-triplet superconductivity owing to the inversion symmetry breaking. This work provides a new pathway for exploring the exotic superconductivity and topological physics in transition metal dichalcogenides.
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Full text: 1 Collection: 01-internacional Database: MEDLINE Language: En Journal: Adv Mater Journal subject: BIOFISICA / QUIMICA Year: 2023 Type: Article Affiliation country: China
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Full text: 1 Collection: 01-internacional Database: MEDLINE Language: En Journal: Adv Mater Journal subject: BIOFISICA / QUIMICA Year: 2023 Type: Article Affiliation country: China