On the high-temperature superconductivity in hydrogen-rich compounds

by Artur Durajski (Institute of Physics, Częstochowa University of Technology, Poland)

Wednesday 18 Feb 2015, 15:00 → 16:30 Europe/Rome

Aula Conversi (Dip. di Fisica - edificio G- Marconi)

In 1968, Ashcroft put forward that metallic hydrogen may be a conventional superconductor under sufficient pressure with a high value of critical temperature, up to room temperature. However, it cannot be yet experimentally verifiable due to a high pressure of hydrogen metallization (~400 GPa). In recent years, researchers have tried to find a way to solve this problem. Hydrogen-rich compounds under pressure have gained much attention as possible high-temperature superconductors with the conventional electron-phonon pairing mechanism. This interest stems from the fact that, in this type of materials, the attainment of metallic states should be well within current capabilities of diamond anvil cells, but at pressures considerably lower than it is necessary for pure hydrogen. At the seminar, the results of the thermodynamic properties of selected hydrogen-rich compounds, obtained using the strong-coupling Eliashberg theory of superconductivity, will be presented.