The electron dynamics in a double quantum well under strong AC electric field and tilted magnetic field is studied using a non-perturbative Floquet approach. For B∥ = 0, the quasienergy spectra show two types of crossings: those related to different Landau levels (LL), and those due to dynamic localization (DL). We find that the system exhibits DL at the same values of the AC field suggesting a hidden dynamical symmetry identified with different parity operations. We analyze also the time evolution of the system, monitoring the elapsed time to return to a given well, and find a complex behavior which is studied in detail.
|Number of pages||2|
|Journal||Physica E: Low-Dimensional Systems and Nanostructures|
|State||Published - May 2003|
|Event||23rd International Conference on Low Temperature Physics - Hiroshima, Japan|
Duration: 20 Aug 2002 → 27 Aug 2002
Bibliographical noteFunding Information:
This work was partially supported by FAPESP and US DOE grant no. DE-FG02-91ER45334.
- Double quantum well
- Dynamic localization
- Tilted magnetic field