Two level mixing effects probed by resonant tunnelling through vertically coupled quantum dots

S. Amana, C. Payette, J. A. Gupta, T. Hatano, K. Ono, T. Kodera, Y. Tokura, D. G. Austing, S. Tarucha

Research output: Contribution to journalConference article

6 Citations (Scopus)

Abstract

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.

Original languageEnglish
Pages (from-to)174-177
Number of pages4
JournalPhysica Status Solidi (C) Current Topics in Solid State Physics
Volume5
Issue number1
DOIs
Publication statusPublished - 2008 Jun 30
Event15th International Conference on Nonequilibrium Carrier Dynamics in Semiconductors, HCIS15 - Tokyo, Japan
Duration: 2007 Jul 232007 Jul 27

ASJC Scopus subject areas

  • Condensed Matter Physics

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    Amana, S., Payette, C., Gupta, J. A., Hatano, T., Ono, K., Kodera, T., Tokura, Y., Austing, D. G., & Tarucha, S. (2008). Two level mixing effects probed by resonant tunnelling through vertically coupled quantum dots. Physica Status Solidi (C) Current Topics in Solid State Physics, 5(1), 174-177. https://doi.org/10.1002/pssc.200776573