Ontology highlight
ABSTRACT:
SUBMITTER: Shalini A
PROVIDER: S-EPMC3797426 | biostudies-literature | 2013 Oct
REPOSITORIES: biostudies-literature
Shalini A A Liu Y Y Al-Jarah U A S UA Srivastava G P GP Wright C D CD Katmis F F Braun W W Hicken R J RJ
Scientific reports 20131016
The phonon spectrum of Ge₂Sb₂Te₅ is a signature of its crystallographic structure and underlies the phase transition process used in memory applications. Epitaxial materials allow coherent optical phonons to be studied in femtosecond anisotropic reflectance measurements. A dominant phonon mode with frequency of 3.4 THz has been observed in epitaxial Ge₂Sb₂Te₅ grown on GaSb(001). The dependence of signal strength upon pump and probe polarization is described by a theory of transient stimulated Ra ...[more]