Superconductivity of lithium-doped hydrogen under high pressure (2013)

Content Provider	CiteSeerX
Author	Xie, Yu Li, B. Quan Oganovb, A. Artem R. Wanga, Hui
Abstract	The high-pressure lattice dynamics and superconductivity of newly proposed lithium hydrides (LiH2, LiH6 and LiH8) have been extensively studied using density functional theory. The application of the Allen–Dynes modified McMillan equation and electron–phonon coupling calculations show that LiH6 and LiH8 are superconductors with critical temperatures (Tc) of 38 K at 150 GPa for LiH6 and 31 K at 100 GPa for LiH8, while LiH2 is not a superconductor. The Tc of LiH6 increases rapidly with pressure and reaches 82 K at 300 GPa due to enhancement of the electron–phonon coupling and the increased density of states at the Fermi level, while the Tc of LiH8 remains almost constant.
File Format	PDF
Publisher Date	2013-01-01
Access Restriction	Open
Content Type	Text