Defectlike nature of the interface in <i>AB</i>/<i>CD</i>-type superlattices

S. L. Zhang; C. L. Yang; Y. T. Hou; Y. Jin; Z. L. Peng; J. Li; S. X. Yuan

doi:10.1103/PhysRevB.52.1477

Defectlike nature of the interface in AB/CD-type superlattices

S. L. Zhang, C. L. Yang, Y. T. Hou, Y. Jin, Z. L. Peng, J. Li, and S. X. Yuan

Phys. Rev. B 52, 1477 – Published 15 July 1995

Abstract

Based on the calculation of lattice dynamic properties and observation of first-order Raman spectra for the Zn-Se localized microscopic interface mode of the (CdSe $)_{4}$ /(ZnTe $)_{4}$ superlattice, multiphonon (MP) Raman scattering of up to five orders has been observed. The linewidth variation with MP order and temperature as well as the frequency and intensity behavior with MP order can be interpreted by the anharmonic decay of the localized mode into extended band modes. These results show the defectlike nature of interfaces in AB/CD-type superlattices.

Received 3 January 1995

DOI:https://doi.org/10.1103/PhysRevB.52.1477

Authors & Affiliations

S. L. Zhang

China Center of Advanced Science and Technology (World Laboratory), P.O. Box 8730, Beijing 100080, China
Department of Physics, Peking University, Beijing 100871, China

C. L. Yang, Y. T. Hou, and Y. Jin