ACTA

Magnons in Cubic MBE-Grown A_1-xMn_xTe Layers (A = Cd, Zn, Mg)

W. Szuszkiewicz^a, B. Hennion^b, M. Jouanne^c, J.F. Morhange^c, E. Dynowska^a, E. Janik^a, T. Wojtowicz^a, M. Zieliński^a and J.K. Furdyna^d
^aInstitute of Physics, Polish Academy of Sciences, Al. Lotników 32/46, 02-668 Warsaw, Poland
^bLaboratoire Léon Brillouin, CE Saclay, 91191 Gif-sur-Yvette, Cedex, France
^cLaboratoire des Milieux Desordonnés et Hétérogenès, UPMC 4, pl. Jussieu, 75252 Paris, France
^dNotre Dame University, Notre Dame, IN, USA

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One-magnon excitations in MBE-grown A_1-xMn_xTe layers (where A = Cd, Zn, Mg and x>0.7) were investigated by means of the Raman scattering measurements at low temperatures (≈20 K). The composition dependence of the anisotropy energy - as extracted from these measurements - is discussed. Further, the elastic neutron scattering measurements were performed in layers of cubic MnTe, which constitute the end point material of the ternary alloys series. Abundance of variously oriented antiferromagnetic domains in MnTe layers as a function of temperature was studied. We confirm occurrence of a pronounced magnetostriction effect.

DOI: 10.12693/APhysPolA.94.583
PACS numbers: 61.12.-q, 75.50.Pp, 78.30.-j