| Автор | U Knell |
| Автор | H Wipf |
| Автор | H J Lauter |
| Автор | T J Udovic |
| Автор | J J Rush |
| Дата выпуска | 1993-10-11 |
| dc.description | We studied the H vibrations in H-doped YBa<sub>2</sub>Cu<sub>3</sub>O<sub>x</sub>H<sub>y</sub>, (y=0.6) by neutron spectroscopy. Neutron spectra were taken at 10 and 14 K from both orthorhombic (x approximately=6.9) and tetragonal (x approximately=6.3) samples. The spectra exhibit large H-induced intensities in the energy range between 40 and 130 meV. In comparison to orthorhombic samples, the H vibrations in tetragonal samples are shifted to lower energies by approximately 11%. This shift is opposite to the spectral shift of the lattice vibrations between H-free orthorhombic and tetragonal YBa<sub>2</sub>Cu<sub>3</sub>O<sub>x</sub>, frequently attributed to differences in the electron-phonon coupling. Our results show that any such differences in the electron-phonon coupling are not apparent in the H vibrations. The results also support previous suggestions that the H occupies sites in the close neighbourhood of the Cu(l) atomic planes. |
| Формат | application.pdf |
| Издатель | Institute of Physics Publishing |
| Название | A neutron-spectroscopy study of the hydrogen vibrations in hydrogen-doped YBa<sub>2</sub>Cu<sub>3</sub>O<sub>x</sub> |
| Тип | paper |
| DOI | 10.1088/0953-8984/5/41/008 |
| Electronic ISSN | 1361-648X |
| Print ISSN | 0953-8984 |
| Журнал | Journal of Physics: Condensed Matter |
| Том | 5 |
| Первая страница | 7607 |
| Последняя страница | 7613 |
| Аффилиация | U Knell; Inst. fur Festkorperphys., Tech. Hochschule Darmstadt, Germany |
| Аффилиация | H Wipf; Inst. fur Festkorperphys., Tech. Hochschule Darmstadt, Germany |
| Аффилиация | H J Lauter; Inst. fur Festkorperphys., Tech. Hochschule Darmstadt, Germany |
| Аффилиация | T J Udovic; Inst. fur Festkorperphys., Tech. Hochschule Darmstadt, Germany |
| Аффилиация | J J Rush; Inst. fur Festkorperphys., Tech. Hochschule Darmstadt, Germany |
| Выпуск | 41 |
