- Tytuł:
- Hole Transport in Impurity Band and Valence Bands Studied in Moderately Doped GaAs:Mn Single Crystals
- Autorzy:
-
Słupiński, T.
Caban, J.
Moskalik, K. - Powiązania:
- https://bibliotekanauki.pl/articles/2047690.pdf
- Data publikacji:
- 2007-08
- Wydawca:
- Polska Akademia Nauk. Instytut Fizyki PAN
- Tematy:
-
75.50.Pp
71.30.+h
72.80.Ey
61.72.-y - Opis:
- We report on a simple experiment on temperature-dependent Hall effect measurements in GaMnAs single crystalline samples with Mn composition estimated at 0.05-0.3 at.% which is slightly below the onset of ferromagnetism. Impurity band transport is visible for Mn compositions of ≈0.3 at.% as a clear metallic behaviour. The results show an interesting situation that the metal-insulator transition in GaAs:Mn occurs within the impurity band which is separated from the valence bands for Mn concentrations studied here. We also discuss on the equilibrium high temperature solubility limit of Mn in GaAs, unknown precisely in the literature.
- Źródło:
-
Acta Physica Polonica A; 2007, 112, 2; 325-330
0587-4246
1898-794X - Pojawia się w:
- Acta Physica Polonica A
- Dostawca treści:
- Biblioteka Nauki
Artykuł