Plasma Dispersion in a HgTe/CdTe Superlattice

다국어 초록 (Multilingual Abstract)

A finite HgTe/CdTe superlattice composed of unit cells with two electron-like-states and a heavy-hole-like state in HgTe and two light-hole-like states in CdTe is investigated by taking into account the wave function overlap not only between the interface states and plasmons but also between the interface states. Using the random phase approximation, we study the density-density correlation function considering the wave functions of three different interface states overlapping with those of the electron-like states, the light-hole-like states, and the heavy-hole-like states, respectively. We have calculated the collective excitation spectra of the intrasubband for the bulk plasmons of the electron-like states, the heavy-hole-like state as a function of the number of unit cells. Furthermore, the Raman intensities due to the intrasubband bulk and surface plasmons are expressed in terms of the relative mode energy of the plasmons and as a function of the number of unit cells.

목차 (Table of Contents)

• Abstract
• Ⅰ. Introduction
• Ⅱ. Density-density correlation function
• Ⅲ. Raman Intensities
• Ⅳ. Conclusion
• REFERENCES