Effect of second-nearest-neighbor forces on the vibrations of amorphous Si
- 15 March 1978
- journal article
- research article
- Published by American Physical Society (APS) in Physical Review B
- Vol. 17 (6), 2790-2792
- https://doi.org/10.1103/physrevb.17.2790
Abstract
A method is presented of solving for the vibrational Green's function of a silicon-dioxide Bethe lattice when it contains second-nearest-neighbor interactions. The method is used to find the density of states of a Bethe lattice constructed with a Keating Hamiltonian. The primary effect of the second-nearest-neighbor interactions is a softening of the rocking bands below 450 .
Keywords
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