scholarly journals Kondo effect in a semiconductor quantum dot coupled to ferromagnetic electrodes

2007 ◽  
Vol 91 (23) ◽  
pp. 232105 ◽  
Author(s):  
K. Hamaya ◽  
M. Kitabatake ◽  
K. Shibata ◽  
M. Jung ◽  
M. Kawamura ◽  
...  
Keyword(s):  
Quantum Dot ◽  
Kondo Effect ◽  
Semiconductor Quantum Dot ◽  
Ferromagnetic Electrodes

Kondo Effect in a Semiconductor Quantum Dot with a Spin-Accumulated Lead

2010 ◽  
Vol 104 (3) ◽  
Author(s):  
T. Kobayashi ◽  
S. Tsuruta ◽  
S. Sasaki ◽  
T. Fujisawa ◽  
Y. Tokura ◽  
...  
Keyword(s):  
Quantum Dot ◽  
Kondo Effect ◽  
Semiconductor Quantum Dot

Realisation of a photonic link between a trapped ion and a semiconductor quantum dot

2014 ◽  
Author(s):  
Claire Le Gall ◽  
Robert Stockill ◽  
Matthias Steiner ◽  
Hendrik-Marten Meyer ◽  
Clemens Matthiesen ◽  
...  
Keyword(s):  
Quantum Dot ◽  
Trapped Ion ◽  
Semiconductor Quantum Dot

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.

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