It has been shown that, as a result of the plasma polarization, there appea
rs a minimum of potential energy of interaction of small like charged parti
cles. With a use of the quasi-classical approximation, an existence conditi
on of the bound state of two like unit charges has been obtained. An opport
unity of electron pairs formation caused by the plasma polarization in high
temperature superconductors is evaluated. (C) 2001 Elsevier Science B.V. A
ll rights reserved.