Different Quantization Mechanisms in Single-Electron Pumps Driven by Surface Acoustic Waves

• Authors: P. Utko , K. Gloos , J. Bindslev Hansen , C. Sørensen , P. Lindelof
• Languages of publication: EN

Abstracts

EN

We have studied the acoustoelectric current in single-electron pumps driven by surface acoustic waves. We have found that in certain parameter ranges two different sets of quantized steps dominate the acoustoelectric current versus gate-voltage characteristics. In some cases, both types of quantized steps appear simultaneously though at different current values, as if they were superposed on each other. This could indicate two independent quantization mechanisms for the acoustoelectric current.

Keywords

EN

73.23.-b; 72.50.+b; 73.21.La

Discipline

• 73.23.-b: Electronic transport in mesoscopic systems
• 73.21.La: Quantum dots
• 72.50.+b: Acoustoelectric effects

• Publisher: Institute of Physics, Polish Academy of Sciences
• Journal: Acta Physica Polonica A
• Year: 2006
• Volume: 110
• Issue: 3
• Pages: 403-408

Dates

published

2006-09

received

2006-06-17

Contributors

author

P. Utko

• Nano-Science Center, Niels Bohr Institute, University of Copenhagen, Universitetsparken 5, 2100 Copenhagen, Denmark

author

K. Gloos

• Wihuri Physical Laboratory, Department of Physics, University of Turku, 20014 Turku, Finland

author

J. Bindslev Hansen

• Department of Physics, Technical University of Denmark, 2800 Lyngby, Denmark

author

C. Sørensen

• Nano-Science Center, Niels Bohr Institute, University of Copenhagen, Universitetsparken 5, 2100 Copenhagen, Denmark

author

P. Lindelof

• Nano-Science Center, Niels Bohr Institute, University of Copenhagen, Universitetsparken 5, 2100 Copenhagen, Denmark

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Identifiers

DOI

10.12693/APhysPolA.110.403