- Tytuł:
- Carrier Spin Dephasing during Spin-Preserving Tunneling in Coupled Quantum Dots
- Autorzy:
-
Krzykowski, M.
Gawełczyk, M.
Machnikowski, P. - Powiązania:
- https://bibliotekanauki.pl/articles/1185791.pdf
- Data publikacji:
- 2016-11
- Wydawca:
- Polska Akademia Nauk. Instytut Fizyki PAN
- Tematy:
-
85.75.-d
03.65.Yz - Opis:
- In this contribution we study carrier tunneling in a system consisting of a pair of coupled quantum dots. We predict the presence of a spin dephasing channel in such a system, which is associated with a "welcher-weg" type of decoherence process occurring during carrier tunneling. In our model such a process is caused by a mismatch of g-factor values in two quantum dots in the presence of external magnetic field. This leads to a mismatch in spin Zeeman splitting between the dots and, in consequence, to the distinguishability of phonons emitted during the tunneling of carriers with opposite spins. Thus we demonstrate a process of spin dephasing without any direct spin-environment coupling present in the model.
- Źródło:
-
Acta Physica Polonica A; 2016, 130, 5; 1165-1168
0587-4246
1898-794X - Pojawia się w:
- Acta Physica Polonica A
- Dostawca treści:
- Biblioteka Nauki
Artykuł