Abstract
The results of a polarized light scattering study of URu2Si2 are presented and discussed for the temperature range 5T 350 K. Two of the Raman-active phonons allowed by the space- and site-group symmetries of URu2Si2 (D4h17-14mmm) are observed, displaying symmetries A1g and B1g. The A1g phonon demonstrates a large integrated intensity increase with decreasing temperature, suggesting a low-temperature increase in the strong electron-phonon coupling. Additionally, quasielastic scattering from spin fluctuations is noted, displaying the symmetry of the antisymmetric representation A2g. The spin-fluctuation linewidth is seen to decrease rapidly near TN, alluding to the formation of a gap over much of the Fermi surface.
| Original language | English (US) |
|---|---|
| Pages (from-to) | 5743-5746 |
| Number of pages | 4 |
| Journal | Physical Review B |
| Volume | 36 |
| Issue number | 10 |
| DOIs | |
| State | Published - 1987 |
ASJC Scopus subject areas
- Condensed Matter Physics