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Wave-vector dependence of magnetic properties of excitons in ZnTe


Reference:

Smith, L. C., Davies, J. J., Wolverson, D., Boukari, H., Mariette, H., Kochereshko, V. P. and Phillips, R. T., 2011. Wave-vector dependence of magnetic properties of excitons in ZnTe. Physical Review B, 83 (15), 155206.

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    Official URL:

    http://dx.doi.org/10.1103/PhysRevB.83.155206

    Abstract

    The magnetic properties of heavy-hole excitons in wide quantum wells of ZnTe with ZnxMg1-xTe barriers have been studied with photoluminescence and reflectivity measurements. The exciton magnetic moments (as characterized by the g values) and the diamagnetic shifts of the exciton transitions are found to depend strongly on the wave-vector component K-z associated with translational motion of the exciton normal to the plane of the quantum well. The case of ZnTe differs from examples of this behavior previously reported for GaS, CdTe, and ZnSe since the ZnTe is under tensile biaxial strain, so that the heavy-hole exciton states lie higher in energy than the corresponding states of the light-hole excitons. The dependence of the magnetic properties on Kz is nevertheless still in excellent agreement with the predictions of a model proposed by Smith et al. [Phys. Rev. B 78, 085204 (2008)], in which mixing of the heavy-hole 1S exciton state with light-hole nP states is found to be responsible for motion-induced changes in the internal structure of the exciton.

    Details

    Item Type Articles
    CreatorsSmith, L. C., Davies, J. J., Wolverson, D., Boukari, H., Mariette, H., Kochereshko, V. P. and Phillips, R. T.
    DOI10.1103/PhysRevB.83.155206
    DepartmentsFaculty of Science > Physics
    Publisher StatementDavies_PRB_2011_83_155206.pdf: Smith, L. C., Davies, J. J., Wolverson, D., Boukari, H., Mariette, H., Kochereshko, V. P. and Phillips, R. T., 2011. Wave-vector dependence of magnetic properties of excitons in ZnTe. Physical Review B, 83 (15), 155206. Copyright (2011) by the American Physical Society.
    RefereedYes
    StatusPublished
    ID Code24853

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