The analytic formulas of the dlelectric function In ZGS at zero temperature are derived, The contribuion of LO phonon scattering has been taken Into account to explain the asymmetric energy loss peaks.

• 本文导出在零温度条件下的零禁带半导体的介电常数的解析公式。 考虑到LO声子散射的贡献说明反对称的能量吸收峰。