| Автор | A A House |
| Автор | S J Blundell |
| Автор | M M Honold |
| Автор | J Singleton |
| Автор | J A A J Perenboom |
| Автор | W Hayes |
| Автор | M Kurmoo |
| Автор | P Day |
| Дата выпуска | 1996-11-04 |
| dc.description | Angle-dependent magnetoresistance oscillations (AMROs) have been studied in the isostructural charge-transfer salts and (where BEDT-TTF is bis(ethylenedithio)tetrathiafulvalene) in steady fields of up to 30 T. The shapes of the approximately elliptical quasi-two-dimensional (Q2D) Fermi surfaces that these organic metals possess have been determined at 30 T and are found to be in broad agreement with recent band-structure calculations. The Fermi surface of the salt undergoes a reconstruction at low fields and temperatures, resulting in a change in the dimensionality of the AMROs from Q2D character to quasi-one-dimensional character. This change is associated with the kink transition that is observed in magnetic field sweeps and is attributed to the formation of a spin-density wave ground state. The phase boundary of the change in the AMRO dimensionality has been followed to both the low-temperature high-field (about 23 T) and low-field high-temperature (about 8 K) extremes. The data are compared with recently proposed models of the AMROs and Fermi surfaces for these materials. |
| Формат | application.pdf |
| Издатель | Institute of Physics Publishing |
| Название | Phase boundary in the dimensionality of angle-dependent magnetoresistance oscillations in the charge-transfer salt |
| Тип | paper |
| DOI | 10.1088/0953-8984/8/45/017 |
| Electronic ISSN | 1361-648X |
| Print ISSN | 0953-8984 |
| Журнал | Journal of Physics: Condensed Matter |
| Том | 8 |
| Первая страница | 8829 |
| Последняя страница | 8845 |
| Выпуск | 45 |
