Hybrid quantum dot–superconducting systems: Josephson current and Kondo effect in the narrow-band limit

2015 ◽  
Vol 91 (4) ◽  
Author(s):  
R. Allub ◽  
C. R. Proetto
Keyword(s):  
Quantum Dot ◽  
Kondo Effect ◽  
Narrow Band ◽  
Josephson Current

scholarly journals Kondo effect and Josephson current through a quantum dot between two superconductors

2004 ◽  
Vol 70 (2) ◽  
Author(s):  
Mahn-Soo Choi ◽  
Minchul Lee ◽  
Kicheon Kang ◽  
W. Belzig
Keyword(s):  
Quantum Dot ◽  
Kondo Effect ◽  
Josephson Current

Spin-bias modulated Kondo effect in an interacting quantum dot

2012 ◽  
Vol 111 (7) ◽  
pp. 07C309
Author(s):  
Yuan Li ◽  
M. B. A. Jalil ◽  
Seng Ghee Tan
Keyword(s):  
Quantum Dot ◽  
Kondo Effect

scholarly journals Ferromagnetic Kondo Effect in a Triple Quantum Dot System

2013 ◽  
Vol 111 (4) ◽  
Author(s):  
P. P. Baruselli ◽  
R. Requist ◽  
M. Fabrizio ◽  
E. Tosatti
Keyword(s):  
Quantum Dot ◽  
Kondo Effect

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 Understanding the Josephson Current through a Kondo-Correlated Quantum Dot

2012 ◽  
Vol 108 (22) ◽  
Author(s):  
D. J. Luitz ◽  
F. F. Assaad ◽  
T. Novotný ◽  
C. Karrasch ◽  
V. Meden
Keyword(s):  
Quantum Dot ◽  
Josephson Current

Kondo effect for electron transport through an artificial quantum dot

2006 ◽  
Vol 15 (4) ◽  
pp. 828-832 ◽  
Author(s):  
Sun Ke-Wei ◽  
Xiong Shi-Jie
Keyword(s):  
Electron Transport ◽  
Quantum Dot ◽  
Kondo Effect

scholarly journals Narrow-Band Absorption-Enhanced Quantum Dot/J-Aggregate Conjugates

2009 ◽  
Vol 131 (28) ◽  
pp. 9624-9625 ◽  
Author(s):  
Brian J. Walker ◽  
Gautham P. Nair ◽  
Lisa F. Marshall ◽  
Vladimir Bulović ◽  
Moungi G. Bawendi
Keyword(s):  
Quantum Dot ◽  
Narrow Band ◽  
Band Absorption

scholarly journals Kondo effect in asymmetric Josephson couplings through a quantum dot

2007 ◽  
Vol 9 (5) ◽  
pp. 115-115 ◽  
Author(s):  
Yoshihide Tanaka ◽  
Akira Oguri ◽  
A C Hewson
Keyword(s):  
Quantum Dot ◽  
Kondo Effect
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