eng Science and Education Publishing International Journal of Physics 2333-4576 2015-02-25 3 2 88 95 10.12691/ijp-3-2-7 IJP2015327 article Boris V. Bondarev bondarev.b@mail.ru 1 Moscow Aviation Institute, VolokolamskoeShosse, 4, 125871, Moscow, Russia The mean field method is applied for analysis of valence electrons in metals. It is shown that at low temperatures electrons have two wave-vector distribution patterns. Isotropic distribution refers to the first pattern. Anisotropic distribution refers to another pattern, particularly to specific wave vector values occurred nearby the Fermi sphere. It is shown that it is the anisotropy that makes the metal obtain its specific superconductor features. http://pubs.sciepub.com/ijp/3/2/7/ijp-3-2-7.pdf valence electrons mean field method Fermi-Dirac function isotropic and anisotropic distributions superconductivity