We study the magnetic (B-) field evolution of single-particle levels in one dot by observing resonant tunnelling (RT) between two weakly coupled vertical quantum dots in series. The B-field dependence of the RT current peaks in the spectrum follows closely that of the states of a circular two dimensional harmonic potential. Several prominent two-level anti-crossing features are revealed. The RT current changes dramatically on passing through the anti-crossing point. This can be assigned to the nature of inter-dot RT though intra-dot level-mixed states.
|Number of pages||4|
|Journal||Physica Status Solidi (C) Current Topics in Solid State Physics|
|Publication status||Published - 2008 Jun 30|
|Event||15th International Conference on Nonequilibrium Carrier Dynamics in Semiconductors, HCIS15 - Tokyo, Japan|
Duration: 2007 Jul 23 → 2007 Jul 27
ASJC Scopus subject areas
- Condensed Matter Physics