Coherent higher-order confined LO phonons are reported for the first time by a pump-probe technique in 70Ge/74Ge isotope superlattices. The Fourier-transformed spectra are well explained by a linear chain model and a bond polarizability approach.
|Number of pages||3|
|Journal||Springer Series in Chemical Physics|
|Publication status||Published - 2001 Dec 1|
ASJC Scopus subject areas
- Physical and Theoretical Chemistry