Selection Rules for Transport Excitation Spectroscopy of Few-Electron Quantum Dots

Abstract

Tunneling of electrons traversing a few-electron quantum dot is strongly influenced by the Coulomb interaction leading to Coulomb blockade effects and single-electron tunneling. We present calculations which demonstrate that correlations between the electrons cause a strong suppression of most of the energetically allowed tunneling processes involving excited dot states. The excitation of center-of-mass modes, in contrast, is unaffected by the Coulomb interaction. Therefore, channels connected to these modes dominate the excitation spectra in transport measurements.

REVTEX manuscript with 3 Figures included in uu file. Published in Phys. Rev. Lett. 74, 1194--1197 (1995)

Cited by in corpus (33)

• Resonant tunneling through ultrasmall quantum dots: zero-bias anomalies, magnetic field dependence, and boson-assisted transport
• Full configuration interaction approach to the few-electron problem in artificial atoms
• Quantum gates by coupled asymmetric quantum dots and controlled-NOT-gate operation
• Tunneling through nanosystems: Combining broadening with many-particle states
• Correlations between Ground and Excited State Spectra of a Quantum Dot
• Coherent Transport through an interacting double quantum dot: Beyond sequential tunneling
• Electronic States in Silicon Quantum Dots: Multivalley Artificial Atoms
• Electron Transport through Nanosystems Driven by Coulomb Scattering
• Tunneling current spectroscopy of a nanostructure junction involving multiple energy levels
• Transport properties of quantum dots in the Wigner molecule regime
• Magnetic Field Dependence of the Level Spacing of a Small Electron Droplet
• Signatures of Wigner Localization in Epitaxially Grown Nanowires
• Energy Spectra of Few-Electron Quantum Dots
• Signatures of electron correlations in the transport properties of quantum dots
• Magnetization of noncircular quantum dots
• Quantum kinetic description of Coulomb effects in one-dimensional nano-transistors
• Bipolar spin filter in a quantum dot molecule
• Tunneling spectroscopy of spin-selective Aharonov-Bohm oscillations in a lateral triple quantum dot molecule
• Electronic States and Transport Phenomena in Quantum Dot Systems
• Sequential magnetotunneling in a vertical Quantum Dot tuned at the crossing to higher spin states
• Interplay between interference and Coulomb interaction in the ferromagnetic Anderson model with applied magnetic field
• Correlation and symmetry effects in transport through an artificial molecule
• Negative differential conductance in quantum dots in theory and experiment
• Transport in serial spinful multiple-dot systems: The role of electron-electron interactions and coherences
• Microwave spectroscopy on a double quantum dot with an on-chip Josephson oscillator
• Electron interactions, classical integrability, and level statistics in quantum dots
• Improved modeling of Coulomb effects in nanoscale Schottky-barrier FETs
• Finite bias spectroscopy of a three-terminal graphene quantum dot in the multi-level regime
• Time-dependent Currents of a Single-electron Transistor in Dissipative Environments
• Many-body excitations in tunneling current spectra of a few-electron quantum dot
• Many Body Diffusion and Interacting Electrons in a Harmonic Confinement
• Isospin Blockade in Transport through Vertical Double Quantum Dots
• A quantitative study of spin-flip co-tunneling transport in a quantum dot