Abstract
The infrared properties of n-type high-T c superconductors are in marked contrast with those of their p-type counterparts both in phononic and in electronic features. Disorder-activated forbidden modes and doping-induced extra modes have been observed in Nd 2-xCe xCuO 4 and Sm 2-xCe xCuO 4. The low-temperature reflectivity and transmission measurements identify neither a clear signature for the BCS gap nor any evidence for Holstein shifts of phonons. The gap symmetry and the role of electron-phonon interactions for n-type cuprates are discussed in connection with their infrared properties.
| Original language | English |
|---|---|
| Pages (from-to) | 4-8 |
| Number of pages | 5 |
| Journal | Journal of the Korean Physical Society |
| Volume | 33 |
| Issue number | 1 |
| Publication status | Published - 1998 |
All Science Journal Classification (ASJC) codes
- Physics and Astronomy(all)