Temat: 71.35.Cc - Katalog OPAC zbiorów

Skocz do pozycji: 1.

Tytuł:: Motional Enhancement of Exciton Magnetic Moments
Autorzy:: Litvinov, A.
Kochereshko, V.
Cox, R. T.
Besombes, L.
Mariette, H.
Boukari, H.
Loginov, D.
Davies, J. J.
Smith, L. C.
Wolverson, D.
Powiązania:: https://bibliotekanauki.pl/articles/2047370.pdf
Data publikacji:: 2007-08
Wydawca:: Polska Akademia Nauk. Instytut Fizyki PAN
Tematy:: 71.35.Cc
71.35.Ji
71.36.+c
78.20.Ls
Opis:: The phenomenon in which giant enhancement of exciton magnetic moments occurs due to translational motion was found for light hole excitons in ZnTe/ZnMgTe quantum well structures. Decreasing diamagnetic shifts as the number of the exciton quantized state increases were found for the first time.
Źródło:: Acta Physica Polonica A; 2007, 112, 2; 161-165
0587-4246
1898-794X
Pojawia się w:: Acta Physica Polonica A
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 2.

Tytuł:: Optical Anisotropy of Quantum Disks in the External Static Magnetic Field
Autorzy:: Schillak, P.
Czajkowski, G.
Powiązania:: https://bibliotekanauki.pl/articles/1811986.pdf
Data publikacji:: 2008-11
Wydawca:: Polska Akademia Nauk. Instytut Fizyki PAN
Tematy:: 71.35.Cc
71.35.Ji
73.21.La
78.20.Ls
78.67.Hc
Opis:: We show how to compute the optical functions (the complex magneto-susceptibility, dielectric function, magneto-reflection and ellipsometric spectra) for semiconductor quantum disks exposed to a uniform magnetic field in the growth direction, including the excitonic effects. The optical response is calculated for an oblique incidence of the propagating electromagnetic wave and for input waves with different polarization. The method uses the microscopic calculation of nanostructure excitonic wave functions and energy levels, and the macroscopic real density matrix approach to compute the electromagnetic fields and susceptibilities. The electron-hole screened Coulomb potential is adapted and the valence band structure is taken into account in the cylindrical approximation, thus separating light- and heavy-hole motions. The novelty of our approach is that the solution is obtained in terms of known one-particle electron and hole eigenfunctions, since, in the considered nanostructure due to confinement effects accompanied by the e-h Coulomb interaction, the separation of the relative- and center-of-mass motion is not possible. We obtain both the eigenvalues and the eigenfunctions. The convergence of the proposed method is examined. We calculate the magnetooptical functions, including the optical Stokes parameters and ellipsometric functions for the case of oblique incidence. Numerical calculations were performed for InAs (disk)/ GaAs (barrier) disks. A good agreement with experiments was obtained.
Źródło:: Acta Physica Polonica A; 2008, 114, 5; 1349-1354
0587-4246
1898-794X
Pojawia się w:: Acta Physica Polonica A
Dostawca treści:: Biblioteka Nauki

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