| Autor: |
G. A. Bolotin, Yu. S. Ponosov, N. M. Chebotaev |
| Rok vydání: |
1990 |
| Předmět: |
|
| Zdroj: |
Physics Letters A. 146:551-555 |
| ISSN: |
0375-9601 |
| DOI: |
10.1016/0375-9601(90)90404-c |
| Popis: |
We present polarized Raman spectra ( w = 100−4000 cm −1 ) of a semiconducting single crystal YBa 2 Cu 3 O 6.1 that encompass the temperature range above and below T N . Significant changes occur in the phonon and high-frequency Raman spectra at temperatures from 320 to 450 K. The results imply a singularity in the electron spectrum near the Fermi energy and low-frequency excitations appear due to a rearrangement of oxygen in the structure and reduction of local symmetry by the heating. |
| Databáze: |
OpenAIRE |
| Externí odkaz: |
|
