Spontaneous self-intercalation of copper atoms into transition metal dichalcogenides
Abstract
Intercalated transition metal dichalcogenides (TMDs) have attracted substantial interest due to their exciting electronic properties. Here, we report a unique approach where copper (Cu) atoms from bulk Cu solid intercalate spontaneously into van der Waals (vdW) gaps of group IV and V layered TMDs at room temperature and atmospheric pressure. This distinctive phenomenon is used to develop a strategy to synthesize Cu species–intercalated layered TMD compounds. A series of Cu-intercalated 2H-NbS2 compounds were obtained with homogeneous distribution of Cu intercalates in the form of monovalent Cu (I), occupying the tetrahedral sites coordinated by S atoms within the interlayer space of NbS2. The Fermi level of NbS2 shifts up because of the intercalation of Cu, resulting in the improvement of electrical conductivity in the z-direction. On the other hand, intercalation of Cu into vdW gaps of NbS2 systematically suppresses the superconducting transition temperature (Tc) and superconducting volume fraction.
- Authors:
-
[1];
[2];
[4];
[1];
[2];
[6];
[1];
[7]
- Wuhan Univ. (China)
- Tsinghua Univ., Shenzhen (China)
- HuaZhong Univ. of Science and Technology, Wuhan, HB (China)
- Univ. of Houston, TX (United States)
- Univ. of Houston, TX (United States); Lawrence Berkeley National Lab. (LBNL), Berkeley, CA (United States)
- Univ. of Cincinnati, OH (United States); Rice Univ., Houston, TX (United States)
- Rice Univ., Houston, TX (United States)
- Publication Date:
- Research Org.:
- Argonne National Laboratory (ANL), Argonne, IL (United States). Advanced Photon Source (APS)
- Sponsoring Org.:
- National Natural Science Foundation of China (NSFC); Fundamental Research Funds for the Central Universities; Wuhan University; US Air Force Office of Scientific Research (AFOSR); National Key Research and Development Program of China; Local Innovative and Research Teams Project of Guangdong Pearl River Talents Program; Shenzhen Projects for Basic Research
- OSTI Identifier:
- 1600828
- Grant/Contract Number:
- FA9550-14-1-0268; FA9550-18-1-0072
- Resource Type:
- Accepted Manuscript
- Journal Name:
- Science Advances
- Additional Journal Information:
- Journal Volume: 6; Journal Issue: 7; Journal ID: ISSN 2375-2548
- Publisher:
- AAAS
- Country of Publication:
- United States
- Language:
- ENGLISH
- Subject:
- 37 INORGANIC, ORGANIC, PHYSICAL, AND ANALYTICAL CHEMISTRY
Citation Formats
Liu, Xiao-Chen, Zhao, Shuyang, Sun, Xueping, Deng, Liangzi, Zou, Xiaolong, Hu, Youcheng, Wang, Yun-Xiao, Chu, Ching-Wu, Li, Jia, Wu, Jingjie, Ke, Fu-Sheng, and Ajayan, Pulickel M. Spontaneous self-intercalation of copper atoms into transition metal dichalcogenides. United States: N. p., 2020.
Web. doi:10.1126/sciadv.aay4092.
Liu, Xiao-Chen, Zhao, Shuyang, Sun, Xueping, Deng, Liangzi, Zou, Xiaolong, Hu, Youcheng, Wang, Yun-Xiao, Chu, Ching-Wu, Li, Jia, Wu, Jingjie, Ke, Fu-Sheng, & Ajayan, Pulickel M. Spontaneous self-intercalation of copper atoms into transition metal dichalcogenides. United States. https://doi.org/10.1126/sciadv.aay4092
Liu, Xiao-Chen, Zhao, Shuyang, Sun, Xueping, Deng, Liangzi, Zou, Xiaolong, Hu, Youcheng, Wang, Yun-Xiao, Chu, Ching-Wu, Li, Jia, Wu, Jingjie, Ke, Fu-Sheng, and Ajayan, Pulickel M. Fri .
"Spontaneous self-intercalation of copper atoms into transition metal dichalcogenides". United States. https://doi.org/10.1126/sciadv.aay4092. https://www.osti.gov/servlets/purl/1600828.
@article{osti_1600828,
title = {Spontaneous self-intercalation of copper atoms into transition metal dichalcogenides},
author = {Liu, Xiao-Chen and Zhao, Shuyang and Sun, Xueping and Deng, Liangzi and Zou, Xiaolong and Hu, Youcheng and Wang, Yun-Xiao and Chu, Ching-Wu and Li, Jia and Wu, Jingjie and Ke, Fu-Sheng and Ajayan, Pulickel M.},
abstractNote = {Intercalated transition metal dichalcogenides (TMDs) have attracted substantial interest due to their exciting electronic properties. Here, we report a unique approach where copper (Cu) atoms from bulk Cu solid intercalate spontaneously into van der Waals (vdW) gaps of group IV and V layered TMDs at room temperature and atmospheric pressure. This distinctive phenomenon is used to develop a strategy to synthesize Cu species–intercalated layered TMD compounds. A series of Cu-intercalated 2H-NbS2 compounds were obtained with homogeneous distribution of Cu intercalates in the form of monovalent Cu (I), occupying the tetrahedral sites coordinated by S atoms within the interlayer space of NbS2. The Fermi level of NbS2 shifts up because of the intercalation of Cu, resulting in the improvement of electrical conductivity in the z-direction. On the other hand, intercalation of Cu into vdW gaps of NbS2 systematically suppresses the superconducting transition temperature (Tc) and superconducting volume fraction.},
doi = {10.1126/sciadv.aay4092},
journal = {Science Advances},
number = 7,
volume = 6,
place = {United States},
year = {Fri Feb 14 00:00:00 EST 2020},
month = {Fri Feb 14 00:00:00 EST 2020}
}
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