Pressure‐Enhanced Superconductivity and Structural Phase Transition in Layered Sn<sub>4</sub>P<sub>3</sub>
High pressure provides a unique tuning method depending on structure modulation to explore the structure–property relationship. Herein, the pressure‐induced structural phase transformation and enhanced superconductivity in a layered binary phosphide Sn 4 P 3 are reported. Comprehensive measurements using in situ synchrotron X‐Ray diffraction and Raman spectroscopy reveal a structural phase transition with mild distortion of SnP 3 building blocks and interlayer shrinkage under high pressure. This differs from a conventional trigonal SnAs(P) 3 to square SnAs(P) 4 topotactic transition in SnAs(P)‐based compound. Through this structure reconstruction under high pressure, electron distribution has been reorganized and phonons have softened, facilitating a high superconducting temperature ( T c ) value of 7.8 K at 34.9 GPa, which is almost six times higher than its ambient value. The study introduces a new transition route in layered SnAs/SnP‐based intermetallic materials and provides insight into the structural and electronic changes under high pressure for Sn 4 P 3 .
Authors
- Xiang‐Feng Zhou (ORCID: https://orcid.org/0000-0001-8651-9273)
- Junquan Huang
- Feng Ke (ORCID: https://orcid.org/0000-0002-1906-9636)
- Kun Zhai (ORCID: https://orcid.org/0000-0002-1465-6778)
- Congpu Mu (ORCID: https://orcid.org/0000-0003-1656-716X)
- Zhongyuan Liu (ORCID: https://orcid.org/0000-0002-5600-8998)
- Gao Xin (ORCID: https://orcid.org/0009-0000-8522-4764)
- Jingyu Hou
- Bochong Wang (ORCID: https://orcid.org/0000-0001-5801-5369)
- Anmin Nie (ORCID: https://orcid.org/0000-0002-0180-1366)
- Jianyong Xiang (ORCID: https://orcid.org/0000-0001-9374-7127)
- Hao Ding (ORCID: https://orcid.org/0000-0001-8881-3193)
- Bingchao Yang (ORCID: https://orcid.org/0000-0001-9322-4326)
- Lin Wang (ORCID: https://orcid.org/0000-0003-2931-7629)
- Tianyu Xue (ORCID: https://orcid.org/0000-0002-3780-9140)
- Xiaobing Liu (ORCID: https://orcid.org/0000-0002-0680-1947)
- Fusheng Wen (ORCID: https://orcid.org/0000-0002-6827-5348)
Institutions
- Qufu Normal University (CN)
- Yanshan University (CN)
Publication Details
- Journal
- Small Structures
- Published
- 2024-09-09
- DOI
- https://doi.org/10.1002/sstr.202400381
- Citations
- 2
- Primary Topic
- MXene and MAX Phase Materials
- Type
- article
- Field-Weighted Citation Impact
- 0.23
Funders
- Salt Science Research Foundation
- National Natural Science Foundation of China