Searches for skyrmions in the limit of zero g-factor
UNSPECIFIED (1998) Searches for skyrmions in the limit of zero g-factor. SEMICONDUCTOR SCIENCE AND TECHNOLOGY, 13 (7). pp. 671-679. ISSN 0268-1242Full text not available from this repository.
Energy gaps have been measured for the ferromagnetic quantum Hall effect states at v =1 and 3 in GaAs/Ga0.7Al0.3As 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 v = 1 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 v = 3. The width of the minimum at v = 1 is found to decrease as the g-factor is reduced in a similar way for all samples.
|Item Type:||Journal Article|
|Subjects:||T Technology > TK Electrical engineering. Electronics Nuclear engineering
T Technology > TA Engineering (General). Civil engineering (General)
Q Science > QC Physics
|Journal or Publication Title:||SEMICONDUCTOR SCIENCE AND TECHNOLOGY|
|Publisher:||IOP PUBLISHING LTD|
|Number of Pages:||9|
|Page Range:||pp. 671-679|
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