Showing papers on "Bipolaron published in 1966"
TL;DR: In this article, the bound state of two-electrons and the existence of a bipolaron are studied using the expression of the effective potential of interactions in crystals by considering in addition to the electron-lattice, also the electronelectron, i.e. electron-plasma interaction.
Abstract: The bound state of two-electrons and the existence of a bipolaron are studied using the expression of the effective potential of interactions in crystals by considering in addition to the electron-lattice, i.e. electron-phonon interaction, also the electron-electron, i.e. electron-plasma interaction. It is shown that the electron-electron interaction strengthens the bound state, making the potential gap deeper and wider, and leads to the appearance of a supplementary narrow gap, the so-called “plasma gap”. The conditions for the existence of the bound state of two electrons, i.e. a bipolaron, are established and the case of germanium is analyzed in detail. The result of calculating the energy minimum value and the effective potential contains — as limit cases in the single-electron approximation — the well-known results given in literature.