Lattice dynamics of LiBC
Abstract
We have investigated the lattice dynamics of LiBC at various annealing temperatures. Experimental Raman and inelastic neutron-scattering results are confronted with density-functional calculations. The excellent agreement between experiment and theory indicates that we have attained a high level of understanding for LiBC, which by its structure is closely related to superconducting MgB2. We will show that annealing of the sample is insufficient to cause Li deficiency and thus produce the expected superconductivity.
- Publication:
-
Physical Review B
- Pub Date:
- February 2004
- DOI:
- 10.1103/PhysRevB.69.052506
- Bibcode:
- 2004PhRvB..69e2506R
- Keywords:
-
- 74.25.Kc;
- 63.20.Kr;
- 78.70.Nx;
- 71.20.Lp;
- Phonons;
- Phonon-electron and phonon-phonon interactions;
- Neutron inelastic scattering;
- Intermetallic compounds