Open AccessHIGH TEMPERATURE SUPERCONDUCTIVITY IN METALLIC HYDROGEN
Author(s) -
Zhu Zai-Wan,
Jiang Wen-Zhi
Publication year - 1981
Publication title -
wuli xuebao
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.199
H-Index - 47
ISSN - 1000-3290
DOI - 10.7498/aps.30.271
Subject(s) - metallic hydrogen , superconductivity , hydrogen , valence (chemistry) , condensed matter physics , materials science , metal , niobium , phonon , room temperature superconductor , effective mass (spring–mass system) , valence electron , coupling constant , radius , transition temperature , ion , electron , superconducting transition temperature , atomic physics , physics , high temperature superconductivity , nuclear physics , quantum mechanics , metallurgy , computer security , computer science
The present paper gives an expression of the effective phonon spectrum a2F(ω),spectrum area λ/2 and electron-phonon coupling constant A of the metal with valence Z in terms of a few parameters, such as average electronic radius rs, Ion mass M and sound velocity vj. Using the formula of Dynes, we have calculated the superconducting transition temperature Tc for matalic hydrogen, lead and niobium. It is shown that matalic hydrogen has λ = 2.55 and Tc = 162 K at zero pressure.