Kondo and anti-Kondo resonances in transport through nanoscale devices

A. A. Aligia and C. R. Proetto
Phys. Rev. B 65, 165305 – Published 4 April 2002
PDFExport Citation

Abstract

We study the current through a quantum wire side-coupled to a quantum dot, and compare it with the case of an embedded dot. The system is modeled after the Anderson Hamiltonian for a linear chain, with one atom either coupled to (side dot) or substituted by (embedded dot) a magnetic impurity. For realistic (small) hopping of the dot to the rest of the system, an exact relationship between both conductivities holds. We calculate the temperature dependence for moderate values of the Coulomb repulsion U using an interpolative perturbative scheme. For sufficiently large U and temperature greater than the Kondo temperature, the conductance as a function of gate voltage displays two extrema.

  • Received 6 September 2001

DOI:https://doi.org/10.1103/PhysRevB.65.165305

©2002 American Physical Society

Authors & Affiliations

A. A. Aligia and C. R. Proetto

  • Comisión Nacional de Energía Atómica, Centro Atómico Bariloche and Instituto Balseiro, 8400 Bariloche, Argentina

References (Subscription Required)

Click to Expand
Issue

Vol. 65, Iss. 16 — 15 April 2002

Reuse & Permissions
Access Options
Author publication services for translation and copyediting assistance advertisement

Authorization Required


×
×

Images

×

Sign up to receive regular email alerts from Physical Review B

Log In

Cancel
×

Search


Article Lookup

Paste a citation or DOI

Enter a citation
×