Author/Authors :
K.S. Nemkovski، نويسنده , , P.A. Alekseev، نويسنده , , J.-M. Mignot، نويسنده , , A.V. Rybina، نويسنده , , F. Iga، نويسنده , , T. Takabatake، نويسنده , , N.Yu. Shitsevalova، نويسنده , , Yu.B. Paderno، نويسنده , , V.N. Lazukov، نويسنده , , E.V. Nefeodova، نويسنده , , N.N. Tiden، نويسنده , , I.P. Sadikov، نويسنده ,
Abstract :
The phonon dispersion in the Kondo-insulator YbB12 and its structure analogue LuB12 has been studied in a wide energy range (up to 55 meV) by means of inelastic neutron scattering. The specific shape of phonon dispersion curves for low-frequency lattice vibrations could be described on the basis of a strong hierarchy suggested for the interactions between boron and rare-earth (RE) atoms: B–B⪢B–RE⪢RE–RE.
Keywords :
Kondo insulator , Dodecaborides , Phonons , Inelastic neutron scattering
