The Search for Superconductivity in High Pressure Hydrides

Abstract

The computational and experimental exploration of the phase diagrams of binary hydrides under high pressure has uncovered phases with novel stoichiometries and structures, some which are superconducting at quite high temperatures. Herein we review the plethora of studies that have been undertaken in the last decade on the main group and transition metal hydrides, as well as a few of the rare earth hydrides at pressures attainable in diamond anvil cells. The aggregate of data shows that the propensity for superconductivity is dependent upon the species used to "dope" hydrogen, with some of the highest values obtained for elements that belong to the alkaline and rare earth, or the pnictogen and chalcogen families.

arXiv comment73 pages, 18 figures, and 1 table

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Cited by in corpus (23)

• Evidence for superconductivity above 260 K in lanthanum superhydride at megabar pressures
• Quantum Crystal Structure in the 250 K Superconducting Lanthanum Hydride
• High-Temperature Superconductivity in Alkaline and Rare Earth Polyhydrides at High Pressure: A Theoretical Perspective
• Strong correlation between bonding network and critical temperature in hydrogen-based superconductors
• Tuning Chemical Precompression: Theoretical Design and Crystal Chemistry of Novel Hydrides in the Quest for Warm and Light Superconductivity at Ambient Pressures
• High-T${}_c$ Superconductivity in doped boron-carbon clathrates
• How Compressed Hydrides Produce Room Temperature Superconductivity
• High-temperature superconductivity in hydrides
• Pressure dependence of the superconducting transition temperature of compressed LaH${}_{10}$
• Superconductivity at 215 K in lanthanum hydride at high pressures
• Crystal Structures and Properties of Iron Hydrides at High Pressure
• A Little Bit of Carbon Can do a Lot for Superconductivity in H${}_3$S
• Room-Temperature Superconductivity in Boron-Nitrogen Doped Lanthanum Superhydride
• Electron-phonon coupling and superconductivity in an alkaline earth hydride CaH${}_6$ at high pressures
• Superconducting hydrides on a quantum landscape
• High-$T$${}_{\text{C}}$ Superconductivity in Hydrogen Clathrates Mediated by Coulomb Interactions between Hydrogen and Central-Atom Electrons
• Electron- and hole-doping on ScH${}_2$ and YH${}_2$: Effects on superconductivity without applied pressure
• Superconductivity at ~70 K in Tin Hydride SnHx under High Pressure
• Synthesis, structure and electric conductivity of higher hydrides of ytterbium at high pressure
• The Li-F-H Ternary System at High Pressures
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• Origin of enhanced chemical precompression in cerium hydride CeH${}_9$
• Ag-Au alloys BCS-like Superconductors?