Brillouin scattering observation of phonon renormalization in KC1:CN− |
| |
Authors: | SM Mudare Howard E Jackson |
| |
Institution: | Department of Physics, University of Cincinnati, Cincinnati, OH 45221, U.S.A. |
| |
Abstract: | The phonon-defect interaction in KC1:CN? has been studied in the 16 GHz frequency range using the Brillouin scattering technique. Brillouin spectra of KC1:CN? at 4.2 K show a defect induced phonon velocity renormalization. The measurements are consistent with a 〈111〉 oriented CN? dipole in KC1 with a tunneling level of T2g symmetry at 2.6 cm?1 and a coupling constant of 1.5 × 10?21 cm3. |
| |
Keywords: | |
本文献已被 ScienceDirect 等数据库收录! |