The surface wave velocity in SnTe/Sb superlattices has been determined using Brillouin scattering. The velocity is independent of modulation wavelength over the range studied but is lower than would be expected if the layers of Sb and SnTe possessed their bulk properties. This is consistent with x-ray data which can be interpreted as evidence of a cubic polymorph of Sb which is unstable in bulk form.
ASJC Scopus subject areas
- Physics and Astronomy(all)