Related Experiment Video
Updated: Jul 31, 2025
04:51
Comparison of Two Different Synthesis Methods of Single Crystals of Superconducting Uranium Ditelluride
Published on: July 8, 2021
2.8K
Pressure-induced stability and superconductivity in LuH12 polyhydrides.
Junyi Du1, Weiguo Sun2, Xiaofeng Li2
1College of Mathematical Science, Luoyang Normal University, Luoyang, 471934, China.
Physical Chemistry Chemical Physics : PCCP
|May 3, 2023
Summary
Researchers explored lutetium hydrides under pressure, discovering stable compounds with high-temperature superconductivity. Cubic LuH$_{12}$ shows the highest critical temperature (Tc) of 187.2 K, offering insights for designing new superconductors.
Area of Science:
- Materials Science
- Condensed Matter Physics
- Computational Chemistry
Background:
- High-pressure hydrides are promising for high-temperature superconductivity.
- Lutetium hydrides have not been extensively studied for their superconducting properties.
Purpose of the Study:
- To systematically investigate the phase stability and superconductivity of lutetium hydrides under high pressure.
- To predict new stable superconducting lutetium hydride compounds.
Main Methods:
- Particle swarm optimization was used to explore phase stability.
- Electronic structure calculations identified superconducting properties.
- Eliashberg theory was applied to calculate the superconducting critical temperature (Tc).
Main Results:
- Several lutetium hydrides (LuH, LuH3, LuH4, LuH6, LuH8, LuH12) were found to be dynamically and thermodynamically stable.
- High density of H-s states and low density of Lu-f states at the Fermi level indicate superconductivity.
- Predicted cubic LuH12 exhibits the highest Tc of 187.2 K at 400 GPa.
Conclusions:
- Lutetium hydrides are potential candidates for high-temperature superconductors.
- The study provides a pathway for designing novel superconducting materials under pressure.
- Computational methods are effective in predicting new superconducting hydrides.
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