Electron Transfer between Weakly Coupled Concentric Quantum Rings

Autor:	Filikhin, I., Matinyan, S., Nimmo, J., Vlahovic, B.
Rok vydání:	2011
Předmět:	Condensed Matter - Mesoscale and Nanoscale Physics Quantum Physics
Zdroj:	Physica E 43 (2011) 1669-1676
Druh dokumentu:	Working Paper
DOI:	10.1016/j.physe.2011.05.020
Popis:	The electronic structure of the semiconductor double concentric quantum nano-ring (DCQR) is studied under the single sub-band effective mass approach. We show that in the weakly coupled DCQR, that has been placed in transverse magnetic field, the electron spatial transition between the rings can occur due to electron level anti-crossing. The anti-crossing of the levels with different radial quantum numbers provides the conditions when the electron tunneling between rings becomes possible. Results of numerical simulation for the electron transition are presented for DCQRs of different geometry. In particularly, the system of a QR with a QD located at center of this QR is considered. Comment: 20 pages, 18 figures
Databáze:	arXiv
Externí odkaz:	http://arxiv.org/abs/1104.3189 Zobrazit plný text záznamu View this record from Arxiv