Superconductivity in high-pressure SiH 4
- 20 April 2007
- journal article
- Published by IOP Publishing in Europhysics Letters
- Vol. 78 (3), 37003
- https://doi.org/10.1209/0295-5075/78/37003
Abstract
A combination of static and dynamical first-principles electronic calculations of silane, SiH4, at high pressure has revealed a novel monoclinic structure with C2/c symmetry. This high-pressure phase is metallic and composed of layers of SiH4 bridged by H bonds. Perturbative linear response calculations at 90 and 125 GPa predict large electron-phonon couplings yielding an electron-phonon coupling parameter λ close to 0.9. The application of McMillan equation gives a superconducting critical temperature (Tc) between 45 and 55 K.This publication has 29 references indexed in Scilit:
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