Higher order zone-folded modes in ZnSe-ZnS strained-layer superlattices | Zendy

Aishi Yamamoto | Zendy; Yoshihiko Kanemitsu | Zendy; Yasuaki Masumoto | Zendy; Shigeki Yamaga | Zendy; Akihiko Yoshikawa | Zendy

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Higher order zone-folded modes in ZnSe-ZnS strained-layer superlattices

Author(s) -

Aishi Yamamoto,

Yoshihiko Kanemitsu,

Yasuaki Masumoto,

Shigeki Yamaga,

Akihiko Yoshikawa

Publication year - 1992

Publication title -

applied physics letters

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 1.182

H-Index - 442

eISSN - 1077-3118

pISSN - 0003-6951

DOI - 10.1063/1.108456

Subject(s) - superlattice , transmission electron microscopy , condensed matter physics , materials science , raman spectroscopy , raman scattering , surface finish , scattering , layer (electronics) , optics , crystallography , optoelectronics , chemistry , nanotechnology , composite material , physics

Higher order (up to the 5th order) zone-folded acoustic modes in ZnSe-ZnS strained-layer superlattices (SLSs) were observed by means of Raman scattering. Structural characterization of both periodicity of superlattices and roughness of the interface was done by means of transmission electron microscopy (TEM). The Raman spectrum of zone-folded modes was well explained by the theoretical calculation which takes account of two observed structural characteristics of the sample, the periodicity of the superlattices, and the roughness of the interface. This clearly shows the strain does not matter to the observation of the zone-folded modes

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