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Resonance Raman Spectroscopy of Extreme Nanowires and Other 1D Systems
Published on: April 28, 2016
Electron-pair resonance in the coulomb blockade
Eran Sela1, H-S Sim, Yuval Oreg
1Department of Condensed Matter Physics, Weizmann Institute of Science, Rehovot, 76100, Israel.
Physical Review Letters
|March 21, 2008
Summary
We investigated electron pair transfer and Coulomb repulsion effects on cotunneling currents. This reveals new ionization resonance peaks and structures in Coulomb blockade diamonds.
Area of Science:
- Condensed Matter Physics
- Quantum Transport
Background:
- Cotunneling current describes electron transport through localized states.
- Coulomb repulsion significantly impacts electron behavior in quantum systems.
Purpose of the Study:
- To investigate many-body corrections to cotunneling current.
- To analyze the impact of Coulomb repulsion on electron pair transfer.
Main Methods:
- Theoretical study of cotunneling current at large bias voltages.
- Analysis of the third derivative of current with respect to voltage.
Main Results:
- Identified ionization resonance peaks due to electron pair transfer.
- Located these peaks at eV=+/-2epsilon(d)/3.
- Predicted new structures within Coulomb blockade diamonds.
Conclusions:
- Many-body effects, specifically Coulomb repulsion, introduce observable features in cotunneling.
- These findings enhance the understanding of electron transport in localized states.
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