Temat: 75.76.+j - Katalog OPAC zbiorów

Skocz do pozycji: 1.

Tytuł:: Charge and Spin Transport in a Metal-Semiconductor Heterostructure with Double Schottky Barriers
Autorzy:: Wolski, S.
Jasiukiewicz, C.
Dugaev, V.
Barnaś, J.
Slobodskyy, T.
Hansen, W.
Powiązania:: https://bibliotekanauki.pl/articles/1386690.pdf
Data publikacji:: 2015-02
Wydawca:: Polska Akademia Nauk. Instytut Fizyki PAN
Tematy:: 73.30.+y
73.40.-c
75.76.+j
Opis:: Taking into account the available experimental results, we model the electronic properties and current-voltage characteristics of a ferromagnet-semiconductor junction. The Fe/GaAs interface is considered as a Fe/(i-GaAs)/n⁺-GaAs/n-GaAs multilayer structure with the Schottky barrier. We also calculate numerically the current-voltage characteristics of a double-Schottky-barrier structure Fe/GaAs/Fe, which are in agreement with available experimental data. For this structure, we have estimated the spin current in the GaAs layer, which characterizes spin injection from the ferromagnet to the semiconductor.
Źródło:: Acta Physica Polonica A; 2015, 127, 2; 472-474
0587-4246
1898-794X
Pojawia się w:: Acta Physica Polonica A
Dostawca treści:: Biblioteka Nauki

Artykuł

Skocz do pozycji: 2.

Tytuł:: Oblique Reflection of Electrons from a Potential Barrier in Heterostructures
Autorzy:: Pfeffer, P.
Zawadzki, W.
Powiązania:: https://bibliotekanauki.pl/articles/1205321.pdf
Data publikacji:: 2014-08
Wydawca:: Polska Akademia Nauk. Instytut Fizyki PAN
Tematy:: 71.70.Ej
73.22.Dj
73.40.-c
75.76.+j
Opis:: Reflection of electrons from a potential barrier in heterostructures is described. An electric field of the barrier causes spin splitting of electron energies via the spin-orbit interaction and its form is calculated in the three-level $k·p$ model for a nontrivial case of unbound electrons. It is shown that if the potential barrier is the only source of the spin-orbit interaction, the spin-flip electron reflections are not possible. However, there appear two unexpected possibilities related to the spin-orbit interaction: (a) non-attenuated electron propagation in the barrier whose height exceeds the energies of incoming electrons, (b) total reflection of electrons whose energies exceed barrier's height. It is indicated that the system can serve as a source of spin-polarized electron beams.
Źródło:: Acta Physica Polonica A; 2014, 126, 3; 820-826
0587-4246
1898-794X
Pojawia się w:: Acta Physica Polonica A
Dostawca treści:: Biblioteka Nauki

Artykuł

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