Journalartikel

Jahr der Veröffentlichung: 2004

Seiten: 699-705

Zeitschrift: European Physical Society Letters

Bandnummer: 68

Heftnummer: 5

ISSN: 0295-5075

Open Access Status: Green

DOI Link: https://doi.org/10.1209/epl/i2004-10258-6

Verlag: IOP Publishing

Abstract: 
We examine a quantum dot with N-dot levels which is strongly coupled to leads for varying number of channels N in the leads. It is shown both analytically and numerically that for strong couplings between the dot and the leads, at least N-dot-N bound states (akin to subradiant states in optics) remain on the dot. These bound states exhibit discrete charging and, for a significant range of charging energies, strong Coulomb blockade behavior as a function of the chemical potential. The physics changes for large charging energy, where the same (superradiant) state is repeatedly charged.

Harvard-Zitierstil: Berkovits, R., von Oppen, F. and Kantelhardt, J. (2004) Discrete charging of a quantum dot strongly coupled to external leads, European Physical Society Letters, 68(5), pp. 699-705. https://doi.org/10.1209/epl/i2004-10258-6

APA-Zitierstil: Berkovits, R., von Oppen, F., & Kantelhardt, J. (2004). Discrete charging of a quantum dot strongly coupled to external leads. European Physical Society Letters. 68(5), 699-705. https://doi.org/10.1209/epl/i2004-10258-6