It is shown that, in alternant lattices with a half-filled nondegenerate tight-binding band, the static zero temperature dielectric function diverges logarithmically for a wavevector Q=( pi , pi , pi ) in the reciprocal lattice. This implies that such three-dimensional systems may distort in a way which results in a non-conducting ground state.
|Original language||English (US)|
|Journal||Journal of Physics C: Solid State Physics|
|State||Published - 1975|
ASJC Scopus subject areas
- Condensed Matter Physics
- Physics and Astronomy(all)