Abstract
We have measured the electrodynamic response of TDAE- [where TDAE is tetrakis(dimethylamino) ethylene], which undergoes a ferromagnetic phase transition at =16 K. The optical conductivity does not display a clear metallic component, which indicates that TDAE- is not an itinerant ferromagnet. Moreover, the optical response is temperature independent and thus unaffected by the ferromagnetic phase transition at . We also found several absorption peaks in the far-infrared spectral range, which are associated with the molecular phonon-mode spectrum of and TDAE.
- Received 29 September 1994
DOI:https://doi.org/10.1103/PhysRevB.51.1366
©1995 American Physical Society