Cyclotron Resonance in Ferromagnetic InMnAs/(Al,Ga)Sb Heterostructures

Details Cyclotron Resonance in Ferromagnetic InMnAs/(Al,Ga)Sb Heterostructures Cyclotron Resonance in Ferromagnetic InMnAs/(Al,Ga)Sb Heterostructures

2003-07-03

arxiv.org/abs/cond-mat/0307087v1

Physics

Condensed Matter

Mesoscale and Nanoscale Physics

4 pages, 5 figures

Scientific paper

We report the observation of hole cyclotron resonance (CR) in InMnAs/(Al,Ga)Sb heterostructures in a wide temperature range covering both the paramagnetic and ferromagnetic phases. We observed two pronounced resonances that exhibit drastic changes in position, linewidth, and intensity at a temperature higher than the Curie temperature, indicating possible local magnetic ordering or clustering. We attribute the two resonances to the fundamental CR transitions expected for delocalized valence-band holes in the quantum limt. Using an 8-band {\bf k$\cdot$p} model, which incorporates ferromagnetism within a mean-field approximation, we show that the temperature-dependent CR peak shift is a direct measure of the carrier-Mn exchange interaction. Significant line narrowing was observed at low temperatures, which we interpret as the suppression of localized spin fluctuations.

Affiliated with

Also associated with

No associations

Rating

Cyclotron Resonance in Ferromagnetic InMnAs/(Al,Ga)Sb Heterostructures 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 Cyclotron Resonance in Ferromagnetic InMnAs/(Al,Ga)Sb Heterostructures, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Cyclotron Resonance in Ferromagnetic InMnAs/(Al,Ga)Sb Heterostructures will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-654838