線性固體與電子—聲子交互作用

Abstract

We use the quasiparticle approach and the method of the equation of motion to study a one-dimensional solid with electron-phonon interaction.After transforming to a moving frame, an energy gap in the single electron energy spectrum with a width at v=0;△=16Efe^-1/λ is obtained, which has the same form as in pairing theory. We also obtain a state in which the electrons will move with the phonons in an organized way. Thus the conductivity will increase extrodinary if v is sufficiently small. This result agrees with the experimental phenomenon, which was observed recently in some one-dimensional organic solid.