Excitonic giant Zeeman effect in GaN:Mn^3+

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dc.creatorPacuski, W.
dc.creatorFerrand, D.
dc.creatorCibert, J.
dc.creatorGaj, J. A.
dc.creatorGolnik, A.
dc.creatorKossacki, P.
dc.creatorMarcet, S.
dc.creatorSarigiannidou, E.
dc.creatorMariette, H.
dc.date2007-03-02
dc.date2007-03-02
dc.date.accessioned2026-07-07T09:25:18Z
dc.date.available2026-07-07T09:25:18Z
dc.descriptionWe describe a direct observation of the excitonic giant Zeeman splitting in (Ga,Mn)N, a wide-gap III-V diluted magnetic semiconductor. Reflectivity and absorption spectra measured at low temperatures display the A and B excitons, with a shift under magnetic field due to s,p-d exchange interactions. Using an excitonic model, we determine the difference of exchange integrals between Mn^3+ and free carriers in GaN, N_0(alpha-beta)=-1.2 +/- 0.2 eV. Assuming a reasonable value of alpha, this implies a positive sign of beta which corresponds to a rarely observed ferromagnetic interaction between the magnetic ions and the holes.
dc.description4 pages, 4 figures
dc.identifierhttps://arxiv.org/abs/cond-mat/0703041
dc.identifierhttp://arxiv.org/abs/cond-mat/0703041
dc.identifierPhys. Rev. B 76, 165304 (2007)
dc.identifierdoi:10.1103/PhysRevB.76.165304
dc.identifier.urihttp://salesiana.dossiersoluciones.com/handle/123456789/156361
dc.subjectMaterials Science
dc.titleExcitonic giant Zeeman effect in GaN:Mn^3+
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