Dark States and Transport through Quantum Dots

• Authors: S. Tooski , B. Bułka
• Languages of publication: EN

Abstracts

EN

We consider current through triple and quadruple quantum dot systems in an in-plane electric field and in the sequential tunneling regime. The electric field breaks symmetry of the system and can trap electron in a dark state in which current flow can completely be blocked. Consequently rotating the electric field, one can observe current oscillations and blockades due to dark state.

Keywords

EN

71.10.-w; 33.57.+c; 73.23.-b; 73.63.Kv

Discipline

• 33.57.+c: Magneto-optical and electro-optical spectra and effects(for electro- and magneto-optical effects in condensed matter spectroscopy, see 78.20.Jq, and 78.20.Ls, respectively)
• 71.10.-w: Theories and models of many-electron systems
• 73.23.-b: Electronic transport in mesoscopic systems
• 73.63.Kv: Quantum dots

• Journal: Acta Physica Polonica A
• Year: 2012
• Volume: 121
• Issue: 5-6
• Pages: 1231-1233

Dates

published

2012-05

Contributors

author

S. Tooski

• Institute of Molecular Physics, Polish Academy of Sciences, M. Smoluchowskiego 17, 60-179 Poznań, Poland

author

B. Bułka

• Institute of Molecular Physics, Polish Academy of Sciences, M. Smoluchowskiego 17, 60-179 Poznań, Poland

References

• 1. C. Emary, Phys. Rev. B 76, 245319 (2007); B. Michaelis, C. Emary, C.W.J. Beenakker, Europhys. Lett. 73, 677 (2006); C. Pöltl, C. Emary, T. Brandes, Phys. Rev. B 80, 115313 (2009)
• 2. W. Qiong, L. Jun, T. Ning, Z. Hao-Sheng, Chin. Phys. B 20, 020303 (2011)
• 3. T. Kostyrko, B.R. Bułka, Phys. Rev. B 79, 075310 (2009); B.R. Bułka, T. Kostyrko, J. Łuczak, Phys. Rev. B 83, 035301 (2011); I. Weymann, B.R. Bułka, J. Barnas, Phys. Rev. B 83, 195302 (2011)

Identifiers

DOI

10.12693/APhysPolA.121.1231