Details

Autor(en) / Beteiligte

• Sasaki, S
• Tamura, H
• Akazaki, T
• Fujisawa, T

Titel

Fano-Kondo interplay in a side-coupled double quantum dot

Ist Teil von

• Physical review letters, 2009-12, Vol.103 (26), p.266806-266806, Article 266806

Ort / Verlag

United States

Erscheinungsjahr

2009

Quelle

PROLA - Physical Review Online Archive

Beschreibungen/Notizen

• 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.