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Strain‐Induced Magneto‐Optical Anisotropy in Semimagnetic Quantum‐Well Structures
Author(s) -
Goede O.,
Heimbrodt W.,
Köpp Th.,
Gumlich H.E.,
Lunn B.,
Ashenford D. E.
Publication year - 1991
Publication title -
physica status solidi (b)
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.51
H-Index - 109
eISSN - 1521-3951
pISSN - 0370-1972
DOI - 10.1002/pssb.2221660225
Subject(s) - condensed matter physics , anisotropy , exciton , magnetic field , quantum well , materials science , perpendicular , luminescence , physics , optics , optoelectronics , laser , geometry , mathematics , quantum mechanics
It is shown that the lattice‐misfit induced biaxial strain in quantum‐well structures with semimagnetic barriers leads to a significant anisotropy of the shift and splitting of the subvalence bands in the barriers by an applied magnetic field. The calculated barrier exciton energies in dependence of a magnetic field parallel or perpendicular to the sample axis are confirmed by the measured anisotropic shift of the luminescence and reflection peaks for various CdTe/(Cd, Mn)Te quantum‐well structures grown by MBE on InSb substrates. Consequences on the behaviour of the well excitons in a magnetic field are discussed.