ACTA

Raman Characterization of MBE-Grown Layered MnTe/CdTe Structures

W. Szuszkiewicz^a, M. Jouanne^b, J.F. Morhange^b, M.A. Kanehisa^b, H. Mariette^c, J.M. Hartmann^c, E. Dynowska^a, G. Karczewski^a, T. Wojtowicz^a, J. Kossut^a and J. Barnaś^d
^aInstitute of Physics, Polish Academy of Sciences, Al. Lotników 32/46, 02-668 Warszawa, Poland
^bLaboratoire des Milieux Désordonnés et Hétérogènes, UPMC, Case 86, 4 place Jussieu, 75252 Paris, Cédex 05, France
^cEquipe CEA-CNRS "Microstructures de Semiconducteurs II-VI" de l'Université J. Fourier et CEA/DRFMC, BP 87, 38054 Grenoble, France
^dUnité Mixte de Physique CNRS-Thomson, Orsay, France

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Raman scattering measurements on (MnTe)₈/(Cd_0.64Zn_0.36Te)₈ multilayer grown by MBE method and on various (MnTe)_n/(CdTe)₁₂ multilayers (where n=8,12,16,24) were performed at low temperatures. In the z̅(x,x)z polarization, structures corresponding to folded acoustic phonons were found. In z̅(x,y)z polarization new complex structures were observed in the low-frequency part of Raman scattering spectra. A possible magnetic origin of these structures is discussed.

DOI: 10.12693/APhysPolA.92.1021
PACS numbers: 75.30.Ds, 75.70.Ak, 78.30.-j