Abstract
The effect of a planar Fermi surface on the phonon spectrum near q = 2pF is investigated. Two branches of excitations are found in this region. The reliability of the calculation is examined by means of a sum rule for the spectral weight function. The average and the spread of the spectral distribution are computed.
Original language | English |
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Pages (from-to) | 1361-1364 |
Number of pages | 4 |
Journal | Solid State Communications |
Volume | 11 |
Issue number | 10 |
DOIs | |
State | Published - Nov 1972 |