Temperature dependence of lattice vibration spectra for Hg 1-xZnxTe alloys

C. C. Wu*, D. Y. Chu, C. Y. Sun, T. R. Yang

*此作品的通信作者

研究成果: 雜誌貢獻期刊論文同行評審

2 引文 斯高帕斯(Scopus)

摘要

The far-infrared reflection spectra of Hg1-xZnxTe crystals with various composition x have been measured at temperatures ranging from 90 to 295 K in the wavenumber region of 60 to 450 cm-1. In all but the pure compounds, HgTe and ZnTe, a two TO phonon structure is clearly observed. The optical phonon frequencies are well determined by Kramers-Kronig integrations and dynamic dielectric function fitting. As the temperature is increased, the lattice vibration frequencies of the ZnTe-like optical mode decreases in the composition range x<or=0.388. A similar situation is found between the temperature dependence of the frequencies of the HgTe-like TO lattice vibration mode and the temperature dependence of energy gap. This indicates that there is a correlation between the HgTe lattice vibration mode and the electronic structure of Hg1-xZnxTe alloys. The approaches which concern the temperature dependence of electronic states and lattice vibration in semiconductors are discussed.

原文英語
文章編號010
頁(從 - 到)437-442
頁數6
期刊Semiconductor Science and Technology
10
發行號4
DOIs
出版狀態已發佈 - 1995
對外發佈

ASJC Scopus subject areas

  • 電子、光磁材料
  • 凝聚態物理學
  • 電氣與電子工程
  • 材料化學

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