Enhanced Superconductivity and Critical Current Density Due to the Interaction of InSe2 Bonded Layer in (InSe2)0.12NbSe2

Rui Niu; Jiayang Li; Weili Zhen; Feng Xu; Shirui Weng; Zhilai Yue; Xiangmin Meng; Jing Xia; Ning Hao; Changjin Zhang

doi:10.1021/jacs.3c09756

Enhanced Superconductivity and Critical Current Density Due to the Interaction of InSe₂ Bonded Layer in (InSe₂)_0.12NbSe₂

J Am Chem Soc. 2024 Jan 17;146(2):1244-1249. doi: 10.1021/jacs.3c09756. Epub 2024 Jan 5.

Authors

Rui Niu^{1

2}, Jiayang Li^{1

2}, Weili Zhen¹, Feng Xu¹, Shirui Weng¹, Zhilai Yue¹, Xiangmin Meng³, Jing Xia³, Ning Hao¹, Changjin Zhang^{1

4}

Affiliations

¹ High Magnetic Field Laboratory of Anhui Province, HFIPS, Chinese Academy of Sciences, Hefei 230031, China.
² Science Island Branch of Graduate School, University of Science and Technology of China, Hefei 230026, China.
³ Key Laboratory of Photochemical Conversion and Optoelectronic Materials, Technical Institute of Physics and Chemistry, Chinese Academy of Sciences, Beijing 100190, China.
⁴ Collaborative Innovation Center of Advanced Microstructures, Nanjing University, Nanjing 210093, China.

Abstract

Superconductivity was discovered in (InSe₂)_xNbSe₂. The materials are crystallized in a unique layered structure where bonded InSe₂ layers are intercalated into the van der Waals gaps of 2H-phase NbSe₂. The (InSe₂)_0.12NbSe₂ superconductor exhibits a superconducting transition at 11.6 K and critical current density of 8.2 × 10⁵ A/cm². Both values are the highest among all transition metal dichalcogenide superconductors at ambient pressure. The present finding provides an ideal material platform for further investigation of superconducting-related phenomena in transition metal dichalcogenides.