中国物理B ›› 2010, Vol. 19 ›› Issue (9): 94101-094101.doi: 10.1088/1674-1056/19/9/094101

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Interface phonon–polaritons in quantum well systems of polar ternary mixed crystals

梁希侠1, 包锦2   

  1. (1)Department of Physics, Inner Mongolia University, Hohhot 010021, China; (2)Department of Physics, Inner Mongolia University, Hohhot 010021, China; College of Science, Inner Mongolia Agricultural University, Hohhot 010018, China
  • 收稿日期:2010-01-28 修回日期:2010-02-21 出版日期:2010-09-15 发布日期:2010-09-15
  • 基金资助:
    Project supported partly by the National Natural Science Foundation of China (Grant Nos. 10764003 and 10947179).

Interface phonon–polaritons in quantum well systems of polar ternary mixed crystals

Bao Jin(包锦)a)b) and Liang Xi-Xia(梁希侠)a)   

  1. a Department of Physics, Inner Mongolia University, Hohhot 010021, China; College of Science, Inner Mongolia Agricultural University, Hohhot 010018, China; b Department of Physics, Inner Mongolia University, Hohhot 010021, China
  • Received:2010-01-28 Revised:2010-02-21 Online:2010-09-15 Published:2010-09-15
  • Supported by:
    Project supported partly by the National Natural Science Foundation of China (Grant Nos. 10764003 and 10947179).

摘要: The interface phonon--polaritons in quantum well systems consisting of polar ternary mixed crystals are investigated. The numerical results of the interface phonon--polariton frequencies in the GaAs/AlxGa1 - xAs, ZnSxSe1 - x/ZnS, and ZnxCd1 - xSe/ ZnSe quantum well systems are obtained and discussed. It is shown that there are six branches of interface phonon--polariton modes distributed in three bulk phonon--polariton forbidden bands in the systems. The electric fields of interface phonon--polaritons are also presented and show the interface locality of the modes. The effects of the 'two-mode' and 'one-mode' behaviours of the ternary mixed crystals on the interface phonon--polariton modes are shown in the dispersion curves.

Abstract: The interface phonon–polaritons in quantum well systems consisting of polar ternary mixed crystals are investigated. The numerical results of the interface phonon–polariton frequencies in the GaAs/AlxGa1-xAs, ZnSxSe1-x/ZnS, and ZnxCd1-xSe/ ZnSe quantum well systems are obtained and discussed. It is shown that there are six branches of interface phonon–polariton modes distributed in three bulk phonon–polariton forbidden bands in the systems. The electric fields of interface phonon–polaritons are also presented and show the interface locality of the modes. The effects of the 'two-mode' and 'one-mode' behaviours of the ternary mixed crystals on the interface phonon–polariton modes are shown in the dispersion curves.

Key words: interface phonon–polaritons, quantum wells, ternary mixed crystals

中图分类号: 

  • 4110H