Автор | D R Leadley |
Автор | R J Nicholas |
Автор | D K Maude |
Автор | A N Utjuzh |
Автор | J C Portal |
Автор | J J Harris |
Автор | C T Foxon |
Дата выпуска | 1998-07-01 |
dc.description | Energy gaps have been measured for the ferromagnetic quantum Hall effect states at and 3 in heterojunctions as a function of Zeeman energy, which is reduced to zero by applying hydrostatic pressures of up to 20 kbar. At large Zeeman energy the gaps are consistent with spin-wave excitations. For a low-density sample the gap at decreases with increasing pressure and reaches a minimum when the g-factor vanishes. At small Zeeman energy the excitation appears to consist of a large number of reversed spins and may be interpreted as a skyrmion. The data also suggest that skyrmionic excitations take place at . The width of the minimum at is found to decrease as the g-factor is reduced in a similar way for all samples. |
Формат | application.pdf |
Издатель | Institute of Physics Publishing |
Название | Searches for skyrmions in the limit of zero -factor |
Тип | paper |
DOI | 10.1088/0268-1242/13/7/004 |
Electronic ISSN | 1361-6641 |
Print ISSN | 0268-1242 |
Журнал | Semiconductor Science and Technology |
Том | 13 |
Первая страница | 671 |
Последняя страница | 679 |
Выпуск | 7 |