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11 June 2003 Magneto-optical and cyclotron resonance study of semiconductor nanostructures in very high magnetic fields
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We have studied new features of semiconductor nano-structures in cyclotron resonance and magneto-optical spectroscopy under very high magnetic fields up to a few megagauss. The new features are attributed to the shrinkage of wave-functions of electrons, holes and excitons. In PbSe/PbEuTe quantum dots that are regularly arranged to form an fcc-like lattice, sharp cyclotron resonance peaks from PbSe quantum dots were observed. It was found that the peaks show a number of anomalous features such as splitting, a remarkable dependence of the intensity on the wavelength, or a peculiar angular dependence of the resonance field. In the photoluminescence spectra of excitons for CdSe/ZnSe quantum dots, GaP/AlP and GaAs/AlAs short period superlattices, a remarkable decrease of the peak intensity and a red shift of the exciton peak were observed with increasing magnetic field; these effects are attributed to the general nature of excitons consisting of spatially separated electrons and holes.
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Noboru Miura, T. Ikaida, K. Uchida, T. Yasuhira, K. Ono, Y. H. Matsuda, G. Springholz, M. Pinczolits, G. Bauer, E. Kurtz, Claus F. Klingshirn, Y. Shiraki, and Yoshiro Hirayama "Magneto-optical and cyclotron resonance study of semiconductor nanostructures in very high magnetic fields", Proc. SPIE 5023, 10th International Symposium on Nanostructures: Physics and Technology, (11 June 2003);

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