Abstract We study the influence of interface phonon modes on the phonon-assisted cyclotron resonance (PACR) effect in GaAs-AlAs quantum well (QW) structures by calculating the absorption power (AP) based on the operator projection technique in comparison with bulk and confined phonon modes in previous study [N. D. Hien, Superlattices Microstruct. 131 (2019) 86]. The full width at half maximum (FWHM) of the PACR absorption peak is obtained by utilizing the profile technique. On the other hand, the FWHM is described as functions of the QW width and temperature for different kinds of phonon modes (interface, bulk, confined modes) presented to compare. The calculations clearly demonstrate important roles of interface-mode as the QW width is small enough. Also, the result indicates that the interface optical modes also gives a considerable contribution to the electron–phonon scattering as compared with that of bulk and confined optical phonon modes.

中文翻译：

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与受限模式相比，界面模式对量子阱中声子辅助回旋共振效应的影响

摘要 我们通过计算基于算子投影技术的吸收功率 (AP) 与体相和受限相比较，研究界面声子模式对 GaAs-AlAs 量子阱 (QW) 结构中声子辅助回旋共振 (PACR) 效应的影响。先前研究中的声子模式 [ND Hien，Superlattices Microstruct。131 (2019) 86]。PACR 吸收峰的半峰全宽 (FWHM) 是通过利用轮廓技术获得的。另一方面，FWHM 被描述为用于比较的不同类型声子模式（界面、体、受限模式）的 QW 宽度和温度的函数。计算清楚地证明了界面模式的重要作用，因为 QW 宽度足够小。还，