Numerical study of the Coulomb blockade in an open quantum dot

2008 ◽  
Vol 77 (24) ◽  
Author(s):  
Yuji Hamamoto ◽  
Takeo Kato
Keyword(s):  
Quantum Dot ◽  
Coulomb Blockade ◽  
Numerical Study ◽  
Open Quantum

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 Coulomb-blockade peak spacings for a partially open quantum dot

2000 ◽  
Vol 61 (23) ◽  
pp. 15927-15938 ◽  
Author(s):  
A. Kaminski ◽  
L. I. Glazman
Keyword(s):  
Quantum Dot ◽  
Coulomb Blockade ◽  
Open Quantum

scholarly journals Coulomb Blockade in an Open Quantum Dot

2011 ◽  
Vol 107 (21) ◽  
Author(s):  
S. Amasha ◽  
I. G. Rau ◽  
M. Grobis ◽  
R. M. Potok ◽  
H. Shtrikman ◽  
...  
Keyword(s):  
Quantum Dot ◽  
Coulomb Blockade ◽  
Open Quantum

Dephasing due to coupling to the external environment in open quantum-dot arrays

2005 ◽  
Vol 17 (33) ◽  
pp. L351-L357 ◽  
Author(s):  
M Elhassan ◽  
J P Bird ◽  
R Akis ◽  
D K Ferry ◽  
T Ida ◽  
...  
Keyword(s):  
Quantum Dot ◽  
External Environment ◽  
Open Quantum

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.

Coulomb Charging Effects in an Open Quantum Dot Device at Zero Magnetic Field

2001 ◽  
Vol 40 (Part 1, No. 3B) ◽  
pp. 1936-1940 ◽  
Author(s):  
Chi-Te Liang ◽  
Michelle Y. Simmons ◽  
Charles G. Smith ◽  
Gil-Ho Kim ◽  
David A. Ritchie ◽  
...  
Keyword(s):  
Magnetic Field ◽  
Quantum Dot ◽  
Zero Magnetic Field ◽  
Open Quantum
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