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Updated: Feb 13, 2026
10:26
Fabrication and Characterization of Superconducting Resonators
Published on: May 21, 2016
12.0K
Pressure-induced superconductivity in palladium sulfide.
Liu-Cheng Chen1,2,3, Hao Yu3, Hong-Jie Pang3
1Key Laboratory of Materials Physics, Institute of Solid State Physics, Chinese Academy of Sciences, Hefei 230031, People's Republic of China.
Summary
High pressure induces superconductivity in palladium sulfide (PdS) by triggering a structural phase transition. This study reveals pressure
Area of Science:
- Condensed Matter Physics
- Materials Science
- Solid State Chemistry
Background:
- Palladium sulfide (PdS) is a narrow band-gap semiconductor.
- Understanding the effects of high pressure on material properties is crucial for discovering novel electronic phases.
Purpose of the Study:
- To investigate the high-pressure behavior of PdS.
- To explore the emergence of superconductivity and structural phase transitions in PdS under pressure.
Main Methods:
- Measurements of resistivity, Hall coefficient, Raman scattering, and X-ray diffraction.
- Application of hydrostatic pressures up to 42.3 GPa.
Main Results:
- A structural phase transition and superconductivity were observed around 19.5 GPa.
- Coexistence of semiconducting and metallic phases was detected between 19.5 and 29.5 GPa.
- A metallic normal state persisted above 29.5 GPa with a stable superconducting transition temperature.
Conclusions:
- Pressure plays a critical role in inducing superconductivity in narrow band-gap semiconductors like PdS.
- The observed evolution of superconducting transition temperature and carrier concentration supports a phonon-mediated superconductivity mechanism.
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