- Tytuł:
- THz Spectroscopy of Extremely Shallow Acceptors States in Ge/GeSi Multiple-Quantum-Well Heterostructures
- Autorzy:
-
Aleshkin, V. Ya.
Erofeeva, Y. V.
Gavrilenko, V. I.
Ikonnikov, A. V.
Kozlov, D. V.
Kuznetsov, O. A.
Veksler, D. B. - Powiązania:
- https://bibliotekanauki.pl/articles/2041651.pdf
- Data publikacji:
- 2005-01
- Wydawca:
- Polska Akademia Nauk. Instytut Fizyki PAN
- Tematy:
-
71.55.Cn
76.90.+d
78.67.De - Opis:
- New shallow acceptor magnetoabsorption lines in THz range have been discovered under bandgap photoexcitation in strained Ge/GeSi multiple-quantum-well heterostructures. It is shown, both theoretically and experimentally, that the resonant absorption results from the photoionization of A$\text{}^{+}$-centers and from 1s → 2p$\text{}_{+}$-type transitions from the ground state of the barrier-situated A$\text{}^{0}$-centers into excited states in the 1st and 2nd electronic subbands. The shallowest discovered ground acceptor states (E$\text{}_{B}$≤0.5 meV) are attributed to the "barrier-spaced" acceptors (a hole bound with an acceptor ion in the neighboring Ge quantum well).
- Źródło:
-
Acta Physica Polonica A; 2005, 107, 1; 137-141
0587-4246
1898-794X - Pojawia się w:
- Acta Physica Polonica A
- Dostawca treści:
- Biblioteka Nauki
Artykuł