Imaging quasi-particle wavefunctions in quantum dots via tunneling spectroscopy

Abstract

We show that in quantum dots the physical quantities probed by local tunneling spectroscopies, namely the quasi-particle wavefunctions of interacting electrons, can considerably deviate from their single-particle counterparts as an effect of Coulomb correlation. From the exact solution of the few-particle Hamiltonian for prototype dots, we find that such deviations are crucial to predict wavefunction images at low electron densities or high magnetic fields.

5 pages, 2 b/w postscript figures, 1 table, RevTeX 4.0 style. One reference added, discussion of experiments expanded, other minor revisions