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Complex domain wall dynamics in compressively strained GaMnAs epilayers
- Source :
- Phys. Rev. B 78, 155310 (2008)
- Publication Year :
- 2008
-
Abstract
- The domain wall induced reversal dynamics in compressively strained GaMnAs was studied employing the magneto-optical Kerr effect and Kerr microscopy. Due to the influence of an uniaxial part in the in-plane magnetic anisotropy (90+/-Delta) domain walls with considerably different dynamic behavior are observed. While the (90+Delta) reversal is identified to be propagation dominated with a small number of domain walls, the case of (90-Delta) reversal includes the nucleation of many domain walls. The domain wall nucleation/propagation energy for both transitions are estimated using model calculations from which we conclude that single domain devices can be achievable using the (90+Delta) mode.<br />Comment: 4 figures
- Subjects :
- Condensed Matter - Other Condensed Matter
Subjects
Details
- Database :
- arXiv
- Journal :
- Phys. Rev. B 78, 155310 (2008)
- Publication Type :
- Report
- Accession number :
- edsarx.0805.2593
- Document Type :
- Working Paper
- Full Text :
- https://doi.org/10.1103/PhysRevB.78.155310