Abstract
It is shown that the extended softening in k space of the [111] transverse acoustic phonon in Nb3Sn seen recently by neutron measurements is in agreement with the predictions of a phenomenological Landau description of the structural phase transition in the A-15 compounds. This indicates the feasibility of a calculation of the partial phonon density of states of modes directly coupled to the order parameter driving the structural transition, as a function of temperature.
| Original language | English (US) |
|---|---|
| Pages (from-to) | 4023-4026 |
| Number of pages | 4 |
| Journal | Physical Review B |
| Volume | 19 |
| Issue number | 8 |
| DOIs | |
| State | Published - 1979 |
| Externally published | Yes |
All Science Journal Classification (ASJC) codes
- Condensed Matter Physics