Superconducting High Pressure Phase of Germane
Guoying Gao, Artem R. Oganov, Aitor Bergara, Miguel Martinez-Canales, Tian Cui, Toshiaki Iitaka, Yanming Ma, Guangtian Zou
DOI 10.1103/PhysRevLett.101.107002 · Physical Review Letters
Active bibliographic source — not scientific approval
Bibliographic access preserves source history; it does not approve extracted materials or validate reported claims. Review warnings on each occurrence separately.
Abstract
High-pressure structures of germane (GeH4) are explored through ab initio evolutionary methodology to reveal a metallic monoclinic structure of C2/c (4 molecules/cell). The C2/c structure consists of layerlike motifs containing novel “H2” units. Enthalpy calculations suggest a remarkably wide decomposition (Ge+H2) pressure range of 0–196 GPa, above which C2/c structure is stable. Perturbative linear-response calculations for C2/c GeH4 at 220 GPa predict a large electron-phonon coupling parameter λ of 1.12 and the resulting superconducting critical temperature reaches 64 K.
Source-reported materials — not catalogue approval
| Formula | Reported Tc (K) | Pressure (GPa) | Type |
|---|---|---|---|
| GeH4 Archive — visibility unverified Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula. | 64 | 220 GPa | unknown |
| SiH4 Archive — visibility unverified Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula. | 17 | 96 GPa | unknown |
Similar papers
Superconductivity in compressed ternary alkaline boron hydrides
similarity 0.95Simin Li et al.
Source status unknown — claims are unverified
Phase stability and superconductivity of lead hydrides at high pressure
similarity 0.95Bole Chen et al.
Source status unknown — claims are unverified
Superconducting high-pressure phase of platinum hydride from first principles
similarity 0.95Xiang-Feng Zhou (周向锋) et al.
Source status unknown — claims are unverified
Effect of spin-orbit coupling on the superconductivity in the lead hydrides under high pressure
similarity 0.94Jisheng Li et al.
Source status unknown — claims are unverified
Theoretical study of stability and superconductivity of ScHn (n=4–8) at high pressure
similarity 0.94Shifeng Qian et al.
Source status unknown — claims are unverified
Superconductivity by doping in alkali-metal hydrides without applied pressure: An ab initio study
similarity 0.93M. A. Olea-Amezcua et al.
Source status unknown — claims are unverified