The High-Pressure Search for Metallic Hydrogen

2022 ◽  
Vol 6 (4) ◽  
Author(s):  
Graeme Ackland ◽  
Isaac Silvera ◽  
Ranga Dias
Keyword(s):  
High Pressure ◽  
Metallic Hydrogen

In this energetic exchange, the original authors and Graeme Ackland express markedly differing views about progress and recent achievements in the study of metallic hydrogen.

Structures and Potential Superconductivity inSiH4at High Pressure: En Route to “Metallic Hydrogen”

2006 ◽  
Vol 96 (1) ◽  
Author(s):  
Ji Feng ◽  
Wojciech Grochala ◽  
Tomasz Jaroń ◽  
Roald Hoffmann ◽  
Aitor Bergara ◽  
...  
Keyword(s):  
High Pressure ◽  
Metallic Hydrogen

Erratum: Structures and Potential Superconductivity inSiH4at High Pressure: En Route to “Metallic Hydrogen” [Phys. Rev. Lett.96, 017006 (2006)]

2006 ◽  
Vol 97 (11) ◽  
Author(s):  
Ji Feng ◽  
Wojciech Grochala ◽  
Tomasz Jaroń ◽  
Roald Hoffmann ◽  
Aitor Bergara ◽  
...  
Keyword(s):  
High Pressure ◽  
Metallic Hydrogen

Ab initio studies of superconductivity in monatomic metallic hydrogen under high pressure

2011 ◽  
Vol 375 (9) ◽  
pp. 1264-1268 ◽  
Author(s):  
Yan Yan ◽  
Jie Gong ◽  
Yanhui Liu
Keyword(s):  
High Pressure ◽  
Ab Initio ◽  
Metallic Hydrogen

scholarly journals Structure and screening in molecular and metallic hydrogen at high pressure

1982 ◽  
Vol 25 (4) ◽  
pp. 2532-2544 ◽  
Author(s):  
D. M. Wood ◽  
N. W. Ashcroft
Keyword(s):  
High Pressure ◽  
Metallic Hydrogen

scholarly journals Chemical templates that assemble the metal superhydrides

2021 ◽  
Author(s):  
Yuanhui Sun ◽  
Maosheng Miao
Keyword(s):  
High Pressure ◽  
High Throughput ◽  
Room Temperature ◽  
Lower Pressure ◽  
Metallic Hydrogen ◽  
Road Map ◽  
Chemical Force

Abstract The recent incessant discoveries of high-pressure hydrides totally altered our road map toward finding room temperature superconductors. Especially, metal superhydrides consisting of hydrogen covalent networks that resemble metallic hydrogen are favorable candidates for improving Tc and lowering pressure. However, the chemical force that drives the dissociation of H2 and the formation of H covalent network in superhydrides is unknown. Our high-throughput calculations show that, after removing H atoms, the remaining metal lattices exhibit unusual electron occupations at the interstitial regions, which matches excellently to the H lattice like a template. Furthermore, H lattices consist of 3D aromatic building units that are greatly stabilized by chemical templates of metals close to s-d boarder. The theory can help predicting ternary superhydrides that may form at lower pressure.

Ab initio prediction of superconductivity in molecular metallic hydrogen under high pressure

2007 ◽  
Vol 141 (11) ◽  
pp. 610-614 ◽  
Author(s):  
Lijun Zhang ◽  
Yingli Niu ◽  
Quan Li ◽  
Tian Cui ◽  
Yi Wang ◽  
...  
Keyword(s):  
High Pressure ◽  
Ab Initio ◽  
Metallic Hydrogen ◽  
Ab Initio Prediction

scholarly journals Interplay between magnetism and superconductivity in metallic hydrogen and hydrides at high pressure

2018 ◽  
Vol 185 ◽  
pp. 08003
Author(s):  
Lev Mazov
Keyword(s):  
Phase Transition ◽  
High Pressure ◽  
Detailed Analysis ◽  
Layered Structure ◽  
Magnetic Measurements ◽  
Onset Temperature ◽  
Resistive Transition ◽  
Metallic Hydrogen ◽  
Hydrogen System ◽  
Model Characteristic

The detailed analysis of resistive and magnetic measurements with sulfur hydrides at high pressure is performed. The hydrogen system at high pressure can exhibit ferromagnetic (FM) as well as superconducting (SC) properties with layered structure. The onset temperature of resistive transition at 200 K in metallic sulfur hydrides corresponds to magnetic (AF SDW) phase transition rather than SC one. SC transition in these sulfur hydrides occurs only when magnetic (AF SDW) phase transition is over (~ 40 K). The SC mechanism in metallic sulfur hydrides is not conventional but corresponds to Keldysh-Kopaev model characteristic for systems with coexistence of dielectric and SC pairing.

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