Abstract
The generalized theory of normal properties of a metal for the case of the properties of the electronic band of electron–phonon systems with a variable electron density of states is used to study the normal phase of metallic hydrogen at a pressure of 500 GPa and a temperature of 200 K. We calculated the frequency dependence of the real ReΣ(ω) and imaginary ImΣ(ω) parts of the self-energy part of the electron Green’s function Σ(ω), as well as the electron density of states N(ε) of the stable phase of metallic hydrogen with the I41/amd symmetry at a pressure of 500 GPa, renormalized by the strong electron–phonon coupling. It is found that the electron conduction band of the I41/amd phase of metallic hydrogen undergoes insignificant reconstruction near the Fermi level because of the renormalization by the electron–phonon coupling.
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Original Russian Text © N.A. Kudryashov, A.A. Kutukov, E.A. Mazur, 2017, published in Pis’ma v Zhurnal Eksperimental’noi i Teoreticheskoi Fiziki, 2017, Vol. 105, No. 7, pp. 424–429.
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Kudryashov, N.A., Kutukov, A.A. & Mazur, E.A. Reconstruction of bands in metallic hydrogen. Jetp Lett. 105, 430–434 (2017). https://doi.org/10.1134/S0021364017070098
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DOI: https://doi.org/10.1134/S0021364017070098