Phonon-Induced Superconducting State: From Metallic Hydrogen to LaH10.

The work is a brief review of the current state of knowledge about high-pressure superconductors with a high value of critical temperature (Tc). The described results relate to hydrogen-rich superconductors with particular emphasis on well-known hydrogen sulfide compounds and also include newly-discovered lanthanum hydride compounds. Since in the considered systems the superconductivity is phononinduced, in theoretical predictions the Eliashberg equations formalism has been used, while some of the results were extended by including the results obtained in calculations using the density functional theory method. Theoretical predictions were compared with the results of experiments available in the literature. A holistic view of the latest results may lead the way to discover the superconductivity at room temperature. [ABSTRACT FROM AUTHOR]