The effect of long-range coulomb interaction on the phonon transport of an ionized mass-spring chain

In this paper, we study the phonon transmission coefficient of a mass-spring chain including two or more electric charges by using Green’s function method within the harmonic approximation. The chain is supposed to be embedded between two simple phononic leads. To this end, the effect of Columb interaction between charges are inserted to their force constants. The results show that for the case of existence just electrical dipole in the system, the phonon transmission coefficient decreases by increasing the distance of charge positions. Moreover, the increasing the number of ions in the center chain, decreases the phonon transmission coefficient, specially, at the low and intermediate frequencies.