GYIG OpenIR  > 地球内部物质高温高压实验室
Decompression-Driven Superconductivity Enhancement in In2Se3
Feng Ke;  Haini Dong;  Yabin Chen;  Jianbo Zhang;  Cailong Liu;  Junkai Zhang;  Yuan Gan
2017
Source PublicationAdvanced Materials
Volume29Issue:4Pages:1-5
Abstract

An unexpected superconductivity enhancement is reported in decompressed In2Se3. The onset of superconductivity in In2Se3 occurs at 41.3 GPa with a critical temperature (T-c) of 3.7 K, peaking at 47.1 GPa. The striking observation shows that this layered chalcogenide remains superconducting in decompression down to 10.7 GPa. More surprisingly, the highest T-c that occurs at lower decompression pressures is 8.2 K, a twofold increase in the same crystal structure as in compression. It is found that the evolution of T-c is driven by the pressure-induced R-3m to I-43d structural transition and significant softening of phonons and gentle variation of carrier concentration combined in the pressure quench. The novel decompression-induced superconductivity enhancement implies that it is possible to maintain pressure-induced superconductivity at lower or even ambient pressures with better superconducting performance.

KeywordLayered Materials Phonon-modulated Superconductivity Pressure Structural Transition Superconductivity Enhancement
Indexed BySCI
Language英语
Document Type期刊论文
Identifierhttp://ir.gyig.ac.cn/handle/42920512-1/8049
Collection地球内部物质高温高压实验室
Affiliation1.Center for High Pressure Science and Technology Advanced Research Shanghai 201203, China
2.Key Laboratory of High-Temperature and High-Pressure Study of the Earth’s Interior Institute of Geochemistry Chinese Academy of Sciences Guiyang, Guizhou 550081, China
3.Department of Materials Science and Engineering University of California Berkeley, CA 94720, USA
4.State Key Laboratory for Superhard Materials Institute of Atomic and Molecular Physics Jilin University Changchun 130012, China
5.Department of Physics, and Collaborative Innovation Center of Advanced Microstructures Nanjing University Nanjing 210093, China
Recommended Citation
GB/T 7714
Feng Ke;Haini Dong;Yabin Chen;Jianbo Zhang;Cailong Liu;Junkai Zhang;Yuan Gan. Decompression-Driven Superconductivity Enhancement in In2Se3[J]. Advanced Materials,2017,29(4):1-5.
APA Feng Ke;Haini Dong;Yabin Chen;Jianbo Zhang;Cailong Liu;Junkai Zhang;Yuan Gan.(2017).Decompression-Driven Superconductivity Enhancement in In2Se3.Advanced Materials,29(4),1-5.
MLA Feng Ke;Haini Dong;Yabin Chen;Jianbo Zhang;Cailong Liu;Junkai Zhang;Yuan Gan."Decompression-Driven Superconductivity Enhancement in In2Se3".Advanced Materials 29.4(2017):1-5.
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