Abstract
The Kondo effect in asymmetric quantum dot dimer connected in series is studied based on the slave boson formalism of the Anderson model. When the dot-dot tunneling coupling is larger than the level broadening, the bonding and antibonding peaks of the Kondo resonances are observed. When the energy level difference between the two dots is large, the plateau structure of the conductance as a function of the gate voltage appears. The conductance at the plateau decreases as the dot-dot coupling increases, reflecting larger splitting of the bonding and anti-bonding peaks.
| Original language | English |
|---|---|
| Pages (from-to) | 1768-1769 |
| Number of pages | 2 |
| Journal | Physica B: Condensed Matter |
| Volume | 284-288 |
| Issue number | PART II |
| Publication status | Published - 2000 |
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Keywords
- Coupled quantum dots
- Kondo effect
- Slave boson formalism
ASJC Scopus subject areas
- Materials Science(all)
- Condensed Matter Physics
Cite this
Kondo effect on the transport properties of asymmetric dimer of quantum dots. / Aono, Tomosuke; Eto, Mikio.
In: Physica B: Condensed Matter, Vol. 284-288, No. PART II, 2000, p. 1768-1769.Research output: Contribution to journal › Article
}
TY - JOUR
T1 - Kondo effect on the transport properties of asymmetric dimer of quantum dots
AU - Aono, Tomosuke
AU - Eto, Mikio
PY - 2000
Y1 - 2000
N2 - The Kondo effect in asymmetric quantum dot dimer connected in series is studied based on the slave boson formalism of the Anderson model. When the dot-dot tunneling coupling is larger than the level broadening, the bonding and antibonding peaks of the Kondo resonances are observed. When the energy level difference between the two dots is large, the plateau structure of the conductance as a function of the gate voltage appears. The conductance at the plateau decreases as the dot-dot coupling increases, reflecting larger splitting of the bonding and anti-bonding peaks.
AB - The Kondo effect in asymmetric quantum dot dimer connected in series is studied based on the slave boson formalism of the Anderson model. When the dot-dot tunneling coupling is larger than the level broadening, the bonding and antibonding peaks of the Kondo resonances are observed. When the energy level difference between the two dots is large, the plateau structure of the conductance as a function of the gate voltage appears. The conductance at the plateau decreases as the dot-dot coupling increases, reflecting larger splitting of the bonding and anti-bonding peaks.
KW - Coupled quantum dots
KW - Kondo effect
KW - Slave boson formalism
UR - http://www.scopus.com/inward/record.url?scp=0033688291&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=0033688291&partnerID=8YFLogxK
M3 - Article
AN - SCOPUS:0033688291
VL - 284-288
SP - 1768
EP - 1769
JO - Physica B: Condensed Matter
JF - Physica B: Condensed Matter
SN - 0921-4526
IS - PART II
ER -