Abstract
The polaron effect induced renormalization of phonon spectrum of superconducting compounds with an A15 structure is considered.The microscopic expression for Poisson's ratio σ with no empirical parameters involved is derived in terms of the constant of electron-phonon coupling λ. The calculated data on σ (λ) and σ (T) for transition metals and alloys as well as for six A15 compounds with the well-known elastic properties are in good agreement with experimental results. The elastic characteristics of 30 A15 compounds for which there are no experimental data available are calculated.
| Original language | English |
|---|---|
| Pages (from-to) | 339-347 |
| Number of pages | 9 |
| Journal | Fizika Nizkikh Temperatur |
| Volume | 14 |
| Issue number | 4 |
| State | Published - Apr 1988 |