| Автор | M N Iliev |
| Автор | V G Hadjiev |
| Дата выпуска | 1990-04-02 |
| dc.description | A polarised Raman study of YBa<sub>2</sub>Cu<sub>3</sub>O<sub>7- delta </sub> single crystals revealed significant changes of light scattering anisotropy with reducing oxygen content. Strongly (y,y) and (x,x) polarised scattering from free carriers and its coupling with the phonon system (Fano interference) are characteristic for the orthorhombic crystal ( delta approximately=0). In contrast, in the tetragonal crystal ( delta approximately=0.8) enhanced continuum scattering and asymmetry lines were observed only in the tetragonal (z,z) polarisation. These findings are attributed to the reduction of free carriers in the xy CuO<sub>2</sub> planes due to chains-to-planes charge redistribution initiated by the decreased oxygen concentration. |
| Формат | application.pdf |
| Издатель | Institute of Physics Publishing |
| Название | Normal state charge redistribution as determined by the Raman scattering from orthorhombic and tetragonal single crystals of YBa<sub>2</sub>Cu<sub>3</sub>O<sub>7-δ</sub> |
| Тип | lett |
| DOI | 10.1088/0953-8984/2/13/024 |
| Electronic ISSN | 1361-648X |
| Print ISSN | 0953-8984 |
| Журнал | Journal of Physics: Condensed Matter |
| Том | 2 |
| Первая страница | 3135 |
| Последняя страница | 3139 |
| Аффилиация | M N Iliev; Fac. of Phys., Sofia Univ., Bulgaria |
| Аффилиация | V G Hadjiev; Fac. of Phys., Sofia Univ., Bulgaria |
| Выпуск | 13 |
