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Observation of folded acoustic phonons in a porous silicon superlattice

 

作者: Xing‐Long Wu,   Feng Yan,   Feng‐Ming Pan,   Xi‐mao Bao,   Shu‐Sheng Jiang,   Ming‐Sheng Zhang,   Duan Feng,  

 

期刊: Applied Physics Letters  （AIP Available online 1996）
卷期: Volume 68, issue 5  

页码: 611-612

 

ISSN:0003-6951

 

年代: 1996

 

DOI:10.1063/1.116484

 

出版商: AIP

 

数据来源: AIP

 

摘要:

Porous silicon superlattice was fabricated and its Raman spectra were examined. The clear zone‐folded doublets from longitudinal acoustic phonons were obtained up to fourth order. A similar phenomenon was not observed in ordinary porous silicon. Using the elastic continuum model, we calculated the frequencies of these folded doublets and the obtained results were in excellent agreement with the experimental ones. ©1996 American Institute of Physics.

 

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