Signatures of electron correlations in the transport properties of quantum dots

Abstract

The transition matrix elements between the correlated $N$ and $N+1$ electron states of a quantum dot are calculated by numerical diagonalization. They are the central ingredient for the linear and non--linear transport properties which we compute using a rate equation. The experimentally observed variations in the heights of the linear conductance peaks can be explained. The knowledge of the matrix elements as well as the stationary populations of the states allows to assign the features observed in the non--linear transport spectroscopy to certain transition and contains valuable information about the correlated electron states.

4 pages (revtex,27kB) + 3 figures in one file ziped and uuencoded (postscript,33kB), to appear in Phys.Rev.B as Rapid Communication

References in corpus (4)

• Coulombically Interacting Electrons in a One-dimensional Quantum Dot
• Wigner Molecules in Nanostructures
• Selection Rules for Transport Excitation Spectroscopy of Few-Electron Quantum Dots
• Nonlinear Transport Properties of Quantum Dots

Cited by in corpus (10)

• Resonant tunneling through ultrasmall quantum dots: zero-bias anomalies, magnetic field dependence, and boson-assisted transport
• Correlations between Ground and Excited State Spectra of a Quantum Dot
• Theory of momentum resolved tunneling into a short quantum wire
• Transport properties of quantum dots in the Wigner molecule regime
• Correlation effects in quasi one dimensional electron wires
• Charge and spin addition energies of one dimensional quantumn dot
• Spin effects in transport through non-Fermi liquid quantum dots
• Negative differential conductance in quantum dots in theory and experiment
• Electron interactions, classical integrability, and level statistics in quantum dots
• The violation of the Hund's rule in semiconductor artificial atoms