Spontaneous electric dipole moments for small particles

Abstract

The spontaneous electric dipole moments for systems consisting of small particles with or without nearby molecules are obtained theoretically. The study is divided into two parts—homogeneous systems and inhomogeneous systems. Under homogeneous systems we evaluate the dipole moment of a hemispherical jellium shape. Under inhomogeneous systems we evaluate the dipole moment of an atom near a spheriod and the dipole moment of a bimetallic spheriod.