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Updated: Jun 27, 2025
09:46
Protocol for Measuring the Thermal Properties of a Supercooled Synthetic Sand-water-gas-methane Hydrate Sample
Published on: March 21, 2016
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Feasible Route to High-Temperature Ambient-Pressure Hydride Superconductivity.
Kapildeb Dolui1, Lewis J Conway1,2, Christoph Heil3
1Department of Materials Science and Metallurgy, University of Cambridge, 27 Charles Babbage Road, Cambridge CB30FS, United Kingdom.
Physical Review Letters
|May 3, 2024
Summary
Researchers discovered a new ambient-pressure hydride superconductor, Mg2IrH6, with a critical temperature of 160 K. This finding offers a promising pathway for high-temperature superconductivity without extreme pressures.
Area of Science:
- Materials Science
- Condensed Matter Physics
- Computational Chemistry
Background:
- High-temperature superconductivity remains a significant challenge in materials discovery.
- Hydrogen and hydride materials show promise for conventional phonon-mediated superconductivity.
- High pressures currently limit the practical application of these superconducting hydrides.
Purpose of the Study:
- To explore a wide range of ternary hydrides at ambient pressure for superconductivity.
- To identify stable, high-temperature superconducting materials through computational screening.
- To overcome the pressure limitations of existing hydride superconductors.
Main Methods:
- High-throughput computational screening of ternary hydrides.
- Assessment of thermodynamic, dynamic, and magnetic stability.
- Prediction of superconducting critical temperatures.
Main Results:
- Identified a metastable ambient-pressure hydride superconductor: Mg2IrH6.
- Predicted a critical temperature of 160 K for Mg2IrH6, rivaling high-temperature cuprates.
- Proposed a synthesis route for Mg2IrH6 via a stable precursor, Mg2IrH7.
Conclusions:
- Mg2IrH6 represents a significant advancement in the search for ambient-pressure superconductors.
- The proposed synthesis route offers a potential pathway for experimental realization.
- Further research is needed to address synthesis challenges and confirm experimental properties.
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