Fano Effect in a Few-Electron Quantum Dot

Abstract

We have studied the Fano effect in a few-electron quantum dot side-coupled to a quantum wire. The conductance of the wire, which shows an ordinal staircase-like quantization without the dot, is modified through the interference (the Fano effect) and the charging effects. These effects are utilized to verify the exhaustion of electrons in the dot. The "addition energy spectrum" of the dot shows a shell structure, indicating that the electron confinement potential is fairly circular. A rapid sign inversion of the Fano parameter on the first conductance plateau with the change of the wire gate voltage has been observed, and explained by introducing a finite width of dot-wire coupling.

11 pages, 7 figures

References in corpus (11)

• Tuning of the Fano Effect through a Quantum Dot in an Aharonov-Bohm Interferometer
• Triplet-Singlet Spin Relaxation via Nuclei in a Double Quantum Dot
• Few-Electron Quantum Dot Circuit with Integrated Charge Read-Out
• The Addition Spectrum of a Lateral Dot from Coulomb and Spin Blockade Spectroscopy
• Fano Resonance in a Quantum Wire with a Side-coupled Quantum Dot
• Coulomb-Modified Fano Resonance in a One-Lead Quantum Dot
• Mesoscopic Fano Effect in a Quantum Dot Embedded in an Aharonov-Bohm Ring
• Crossover from mesoscopic to universal phase for electron transmission in quantum dots
• Ellipsoidal deformation of vertical quantum dots
• Anti-Kondo resonance in transport through a quantum wire with a side-coupled quantum dot
• Charge Distribution in a Kondo Correlated Quantum Dot

Cited by in corpus (13)

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• Universal zero-bias conductance for the single electron transistor. II: Comparison with numerical results
• Thermal dependence of the zero-bias conductance through a nanostructure
• Kondo effect in electrostatically defined ZnO quantum dots
• Tunneling induced spin dynamics in a quantum dot-lead hybrid system
• Excited-state spectroscopy on a quantum dot side-coupled to a quantum wire
• Probing local electronic states in the quantum Hall regime with a side coupled quantum dot
• Detection of spin polarization utilizing singlet and triplet states in a single-lead quantum dot
• Fano-Kondo effect in a two-level system with triple quantum dots: shot noise characteristics
• Difference in charge and spin dynamics in a quantum dot-lead coupled system
• Spin-polarization in the vicinity of quantum point contact with spin-orbit interaction
• Impurity-directed Transport within a Finite Disordered Lattice
• Microwave dependent quantum transport characteristics in GaN/AlGaN FETs