Direct observation of vibrational modes in Hg1-xCdxTe

Biao Li, J. H. Chu, H. J. Ye, S. P. Guo, W. Jiang, D. Y. Tang

Research output: Contribution to journalArticlepeer-review

16 Scopus citations

Abstract

The vibrational modes in Hg1-xCdxTe epitaxial films and HgTe/CdTe superlattices have been investigated by means of far-infrared (FIR) transmittance spectra at temperatures from 4.2 to 300 K. The observations were put forward in the spectral range from 20 to 350 cm-1, emphasizing the wave-number region at the low-frequency side of the reststrahlen absorption band. A series of single-phonon and two-phonon modes as well as impurities- and defects-induced vibrational modes are observed. FIR transmission seems to be a good probe for characterization of the perfection of Hg1-xCdxTe films.

Original languageEnglish
Pages (from-to)3272-3274
Number of pages3
JournalApplied Physics Letters
Volume68
Issue number23
DOIs
StatePublished - 1996
Externally publishedYes

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