Тип публикации: статья из журнала
Год издания: 2021
Идентификатор DOI: 10.1007/s10948-021-06087-3
Ключевые слова: bcs theory, high-temperature superconductors, metallic hydrogen, room-temperature superconductors, superconducting hydrades under high pressure, superconducting hydrogen
Аннотация: The experimental discovery of the highest, up to 0 degree Celsius, superconducting transition temperatures Tc in the class of so-called hydrides under high pressure is undoubtedly the striking event in modern physics. In this paper, we give a short overview of the some history of the room-temperature conventional superconductivity.Показать полностьюA theoretical description of such high Tc, as was shown and even predicted in a number of ab initio works, can be unambiguously given in the framework of the electron–phonon mechanism of Cooper pairing. Thus, the basic equation to calculate Tc will be the one proposed in 1957 by Bardeen, Cooper, and Schriefer. It is known that in this case the value of Tc is directly determined by a number of effective parameters: the Debye frequency, the density of electronic states at the Fermi level, and the electron–phonon interaction constant. Within the framework of the modern development of the density functional theory, all these quantities can be obtained using standard packages for band structure calculations. © 2021, The Author(s), under exclusive licence to Springer Science+Business Media, LLC, part of Springer Nature.
Журнал: Journal of Superconductivity and Novel Magnetism
ISSN журнала: 15571939
Издатель: Springer