Physics – Condensed Matter – Materials Science
Scientific paper
2010-05-10
Physics
Condensed Matter
Materials Science
Scientific paper
The incorporation of Phosphorus into (Ga,Mn)As epilayers allows for the tuning of the magnetic easy axis from in-plane to perpendicular-to-plane without the need for a (Ga,In)As template. For perpendicular easy axis, using magneto-optical imaging a self-organized pattern of up- and down-magnetized domains is observed for the first time in a diluted magnetic semiconductor. Combining Kerr microscopy, magnetometry and ferromagnetic resonance spectroscopy, the exchange constant and the domain wall width parameter are obtained as a function of temperature. The former quantifies the effective Mn-Mn ferromagnetic interaction. The latter is a key parameter for domain wall dynamics. The comparison with results obtained for (Ga,Mn)As/(Ga,In)As reveals the improved quality of the (Ga,Mn)As$_{1-y}$P$_y$ layers regarding domain wall pinning, an increase of the domain wall width parameter and of the effective Mn-Mn spin coupling. However, at constant Mn doping, no significant increase of this coupling is found with increasing P concentration in the investigated range.
Cubukcu Murat
Gourdon Catherine
Haghgoo Sanaz
Lemaître Aristide
Thevenard Laura
No associations
LandOfFree
Exchange constant and domain wall width in (Ga,Mn)(As,P) films with self-organization of magnetic domains does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.
If you have personal experience with Exchange constant and domain wall width in (Ga,Mn)(As,P) films with self-organization of magnetic domains, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Exchange constant and domain wall width in (Ga,Mn)(As,P) films with self-organization of magnetic domains will most certainly appreciate the feedback.
Profile ID: LFWR-SCP-O-627468