https://doi.org/10.1007/s100510050835
Correlations of conductance peaks and transmission phases in deformed quantum dots
1
Max Planck Institut für Kernphysik,
Postfach 103980, 69029 Heidelberg, Germany
2
Department of Condensed Matter Physics, The Weizmann Institute
of Science, Rehovot 76100, Israel
3
Universität GH Essen,
Fachbereich 7, 45117 Essen, Germany
Corresponding author: a hacken@theo-phys.uni-essen.de
Received:
17
July
1998
Published online: 15 July 1999
We investigate the Coulomb blockade resonances and the phase of the transmission amplitude of a deformed ballistic quantum dot weakly coupled to leads. We show that preferred single-particle levels exist which stay close to the Fermi energy for a wide range of values of the gate voltage. These states give rise to sequences of Coulomb blockade resonances with correlated peak heights and transmission phases. The correlation of the peak heights becomes stronger with increasing temperature. The phase of the transmission amplitude shows lapses by π between the resonances. Implications for recent experiments on ballistic quantum dots are discussed.
PACS: 73.23.Hk – Coulomb blockade; single-electron tunneling / 73.23.Ps – Other electronic properties of mesoscopic systems / 73.40.Gk – Tunneling
© EDP Sciences, Società Italiana di Fisica, Springer-Verlag, 1999
