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中文摘要：
采用改进的线性组合算符和幺正变换相结合的方法，导出了三角量子阱中弱耦合极化子的有效质量。讨论了极化子速度、电声子耦合常数和电子面密度对极化子有效质量的影响。通过对GaAs材料的数值计算结果表明：因为电．声子耦合作用和Rashba效应的存在，发现弱耦合极化子的有效质量由两部分组成，而且弱耦合极化子的有效质量随电声子耦合常数、电子面密度和极化子速度都发生了分裂。
英文摘要：
Tokuda-modified linear-combination operator method and the unitary transformation method were used to study the properties of the weakly-coupling polaron, considering the influence of Rashba effect, which is brought by the spin-orbit（SO） interaction, in an semiconductor triangular quantum well（TQW）. Numerical calculation on the GaAs TQW, as the example, is performed. The expressions for the effective mass of the polaron as a function of the velocity, the coupling constant and the electron area density were derived. Numerical results showed that the total effective mass of the polaron is composed of two parts. The interactions between the orbit and the spin with different direction have different effects on the effective mass of the polaron.
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