Fano-Kondo Interplay in a Side-Coupled Double Quantum Dot

S. Sasaki, H. Tamura, T. Akazaki, and T. Fujisawa
Phys. Rev. Lett. 103, 266806 – Published 30 December 2009

Abstract

We investigate low-temperature transport characteristics of a side-coupled double quantum dot where only one of the dots is directly connected to the leads. We observe Fano resonances, which arise from interference between discrete levels in one dot and the Kondo effect, or cotunneling in general, in the other dot, playing the role of a continuum. The Kondo resonance is partially suppressed by destructive Fano interference, reflecting novel Fano-Kondo competition. We also present a theoretical calculation based on the tight-binding model with the slave boson mean field approximation, which qualitatively reproduces the experimental findings.

  • Figure
  • Figure
  • Figure
  • Figure
  • Received 13 July 2009

DOI:https://doi.org/10.1103/PhysRevLett.103.266806

©2009 American Physical Society

Authors & Affiliations

S. Sasaki1,*, H. Tamura1, T. Akazaki1, and T. Fujisawa2

  • 1NTT Basic Research Laboratories, NTT Corporation, Atsugi, Kanagawa 243-0198, Japan
  • 2Department of Physics, Tokyo Institute of Technology, Meguro, Tokyo 152-8551, Japan

  • *satoshi@nttbrl.jp

Article Text (Subscription Required)

Click to Expand

References (Subscription Required)

Click to Expand
Issue

Vol. 103, Iss. 26 — 31 December 2009

Reuse & Permissions
Access Options
Collection
Heating up of Superconductors
January 27, 2017

This collection marks the 30th anniversary of the discovery of high-temperature superconductors. The papers selected highlight some of the advances that have been made to date, both in understanding why these compounds behave in the way they do, and in utilizing them in applications. The papers included in the collection have been made free to read.

APS and CERN Sign Open Access Agreement for SCOAP3

APS and CERN, the host organization of SCOAP3 (Sponsoring Consortium for Open Access Publishing in Particle Physics), have signed an agreement to make the high-energy physics (HEP) articles published in three leading APS journals open access beginning January 1, 2018. This agreement acts to support the publishing of open access content for wider benefit of the HEP community.

Authorization Required


×
×

Images

×

Sign up to receive regular email alerts from Physical Review Letters

Log In

Cancel
×

Search


Article Lookup

Paste a citation or DOI

Enter a citation
×