scholarly journals Kondo resonance, Coulomb blockade, and Andreev transport through a quantum dot

1998 ◽  
Vol 58 (15) ◽  
pp. 9641-9643 ◽  
Author(s):  
Kicheon Kang
Keyword(s):  
Quantum Dot ◽  
Coulomb Blockade ◽  
Kondo Resonance

KONDO EFFECT AND SPIN-CHARGE SEPARATION IN QUANTUM DOTS

2001 ◽  
Vol 15 (10n11) ◽  
pp. 1426-1442
Author(s):  
L. I. GLAZMAN ◽  
F. W. J. HEKKING ◽  
A. I. LARKIN
Keyword(s):  
Quantum Dot ◽  
Charge Separation ◽  
Coulomb Blockade ◽  
Kondo Effect ◽  
Broad Band ◽  
Single Mode ◽  
Kondo Temperature ◽  
Average Charge ◽  
Opposite Case ◽  
Anderson Impurity Model

The Kondo effect in a quantum dot is discussed. In the standard Coulomb blockade setting, tunneling between the dot and the leads is weak, the number of electrons in the dot is well-defined and discrete; the Kondo effect may be considered in the framework of the conventional one-level Anderson impurity model. It turns out however, that the Kondo temperature TK in the case of weak tunneling is extremely low. In the opposite case of almost reflectionless single-mode junctions connecting the dot to the leads, the average charge of the dot is not discrete. Surprisingly, its spin may remain quantized: s=1/2 or s=0, depending (periodically) on the gate voltage. Such a "spin-charge separation" occurs because, unlike an Anderson impurity, a quantum dot carries a broad-band, dense spectrum of discrete levels. In the doublet state, the Kondo effect develops with a significantly enhanced TK. Like in the weak-tunneling regime, the enhanced TK exhibits strong mesoscopic fluctuations. The statistics of the fluctuations is universal, and related to the Porter-Thomas statistics of the wave function fluctuations.

scholarly journals Asymmetric Kondo resonance splitting transition in T-shaped coupled-quantum-dot devices

2008 ◽  
Vol 57 (4) ◽  
pp. 2421
Author(s):  
Chen Xiong-Wen ◽  
Shi Zhen-Gang ◽  
Chen Bao-Ju ◽  
Song Ke-Hui
Keyword(s):  
Quantum Dot ◽  
Kondo Resonance

scholarly journals The Kondo resonance in a single InAs quantum dot probed by nanogap electrodes

2007 ◽  
Vol 61 ◽  
pp. 463-466 ◽  
Author(s):  
Y Igarashi ◽  
M Jung ◽  
M Yamamoto ◽  
A Oiwa ◽  
T Machida ◽  
...  
Keyword(s):  
Quantum Dot ◽  
Kondo Resonance ◽  
Inas Quantum Dot ◽  
Nanogap Electrodes

Microwave modulation of Coulomb-blockade oscillations in a quantum dot

1996 ◽  
Vol 227 (1-4) ◽  
pp. 98-101 ◽  
Author(s):  
K. Fujii ◽  
W. Gödel ◽  
D.A. Wharam ◽  
S. Manus ◽  
J.P. Kotthaus ◽  
...  
Keyword(s):  
Quantum Dot ◽  
Coulomb Blockade ◽  
Microwave Modulation

Investigation of an open quantum dot with a Coulomb blockade quantum dot detector

2002 ◽  
Vol 12 (1-4) ◽  
pp. 827-829
Author(s):  
S.J. Geer ◽  
A.G. Davies ◽  
C.G. Smith ◽  
L.D. Macks ◽  
W.R. Tribe ◽  
...  
Keyword(s):  
Quantum Dot ◽  
Coulomb Blockade ◽  
Open Quantum

scholarly journals Statistics of the Coulomb-blockade peak spacings of a silicon quantum dot

1999 ◽  
Vol 59 (16) ◽  
pp. R10441-R10444 ◽  
Author(s):  
F. Simmel ◽  
David Abusch-Magder ◽  
D. A. Wharam ◽  
M. A. Kastner ◽  
J. P. Kotthaus
Keyword(s):  
Quantum Dot ◽  
Coulomb Blockade ◽  
Silicon Quantum Dot
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