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Current Eigenmodes and Dephasing in Nanoscopic Quantum Networks
- Publication Year :
- 2012
- Publisher :
- arXiv, 2012.
-
Abstract
- Using the non-equilibrium Keldysh Green's function formalism, we show that the non-equilibrium charge transport in nanoscopic quantum networks takes place via {\it current eigenmodes} that possess characteristic spatial patterns. We identify the microscopic relation between the current patterns and the network's electronic structure and topology and demonstrate that these patterns can be selected via gating or constrictions, providing new venues for manipulating charge transport at the nanoscale. Finally, decreasing the dephasing time leads to a smooth evolution of the current patterns from those of a ballistic quantum network to those of a classical resistor network.<br />Comment: 6 pages, 4 figures
- Subjects :
- Physics
Quantum network
Condensed Matter - Mesoscale and Nanoscale Physics
Quantum mechanics
Dephasing
Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
FOS: Physical sciences
Current (fluid)
Condensed Matter Physics
Condensed Matter::Mesoscopic Systems and Quantum Hall Effect
Nanoscopic scale
Electronic, Optical and Magnetic Materials
Subjects
Details
- Database :
- OpenAIRE
- Accession number :
- edsair.doi.dedup.....a7400ed5e3ebc32bc32ca89f6dad4be0
- Full Text :
- https://doi.org/10.48550/arxiv.1203.3198