DEFECT-LIKE NATURE OF THE INTERFACE IN AB/CD-TYPE SUPERLATTICES

作者：ZHANG SL^*; YANG CL; HOU YT; JIN Y; PENG ZL; LI J; YUAN SX

来源：Physical Review B - Condensed Matter and Materials Physics, 1995, 52(3): 1477-1480.

DOI：10.1103/PhysRevB.52.1477

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 defect like nature of interfaces in AB/CD-type superlattices.

• 出版日期1995-7-15
• 单位中国高等科学技术中心; 中国科学院上海技术物理研究所; 北京大学