High-temperature superconductivity in hydrides

Over the past six years (2015-2021), many superconducting hydrides with critical temperatures $T_{C}$ up to 250 K, which are currently record highs, have been discovered. Now we can already say that a special field of superconductivity has developed. This is hydride at ultrahigh pressures. For most part, properties superhydrides well described by Migdal-Eliashberg theory strong electron-phonon interaction, especially when anharmonicity phonons taken into account. The isotope effect, effect magnetic (up 60-70 T) on temperature and current in samples, dependence pressure degree doping were investigated. divergences between experiment interest, phase stability behavior upper fields low temperatures. article presents retrospective analysis data 2015-2021 describes promising directions for future research superconductivity.