Annotation
The interaction between phonons and electrons close to a Van Hove singular point of the S$_2$ type is considered using methods not based on perturbation theory. It is shown that weak interaction considerably changes the spectrum and density of states in the region of the singularity.
© 2016 Publisher M.V.Lomonosov Moscow State University
Authors
Yu.P. Drozhzhov
Science News of the Faculty of Physics, Lomonosov Moscow State University
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