| Autor: | M. Chen, Sy_Hwang Liou, Qingsheng Cai, A. L. Vasiliev, M. Chandrasekhar, R. Li, E. P. Kvam, H. Luo, W. B. Yelon |
|---|---|
| Rok vydání: | 1998 |
| Předmět: |
Superconductivity
Phase transition Materials science Physics and Astronomy (miscellaneous) Condensed matter physics Phonon Neutron diffraction Condensed Matter Physics Electronic Optical and Magnetic Materials symbols.namesake Condensed Matter::Superconductivity symbols Neutron Raman spectroscopy Raman scattering Excitation |
| Zdroj: | Journal of Superconductivity: Incorporating Novel Magnetism. 11:59-62 |
| ISSN: | 0896-1107 |
| DOI: | 10.1023/a:1022677711855 |
| Popis: | The HgBa2CuO4+δ sample was characterized by Neutron diffraction and magnetic measurements. Both of the measurements indicate a high purity of the sample. Raman measurement was performed on a HgBa2CuO4+δ compound of Tc = 96 K. The apical oxygen vibration at 592 cm−1 was found to show (a) an above Tc anomaly, and (b) frequency hardening and linewidth broadening below the superconducting phase transition. The latter is attributed to the coupling of the phonon to the electronic excitation and related to the opening of the superconducting gap below the phonon frequency. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
|
Full text from SpringerLink