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

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dc.creatorKhodaparast, G. A.
dc.creatorKono, J.
dc.creatorMatsuda, Y. H.
dc.creatorIkeda, S.
dc.creatorMiura, N.
dc.creatorSlupinski, T.
dc.creatorOiwa, A.
dc.creatorMunekata, H.
dc.creatorSun, Y.
dc.creatorKyrychenko, F. V.
dc.creatorSanders, G. D.
dc.creatorStanton, C. J.
dc.date2003-07-03
dc.date.accessioned2026-07-07T02:52:11Z
dc.date.available2026-07-07T02:52:11Z
dc.descriptionWe 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.
dc.description4 pages, 5 figures
dc.identifierhttps://arxiv.org/abs/cond-mat/0307087
dc.identifierhttp://arxiv.org/abs/cond-mat/0307087
dc.identifier.urihttp://salesiana.dossiersoluciones.com/handle/123456789/21748
dc.subjectMesoscale and Nanoscale Physics
dc.subjectMaterials Science
dc.titleCyclotron Resonance in Ferromagnetic InMnAs/(Al,Ga)Sb Heterostructures
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