scholarly journals Kondo effect in a quantum dot side-coupled to a topological superconductor

2013 ◽  
Vol 87 (24) ◽  
Author(s):  
Minchul Lee ◽  
Jong Soo Lim ◽  
Rosa López
Keyword(s):  
Quantum Dot ◽  
Kondo Effect ◽  
Topological Superconductor

scholarly journals Topological isoconductance signatures in Majorana nanowires

2021 ◽  
Vol 11 (1) ◽  
Author(s):  
L. S. Ricco ◽  
J. E. Sanches ◽  
Y. Marques ◽  
M. de Souza ◽  
M. S. Figueira ◽  
...  
Keyword(s):  
Quantum Dot ◽  
Transport Properties ◽  
Spin Polarization ◽  
Bound States ◽  
Spin Asymmetry ◽  
Experimental Protocol ◽  
Zero Bias ◽  
Topological Superconductor ◽  
Hybrid Device ◽  
Majorana Bound States

AbstractWe consider transport properties of a hybrid device composed by a quantum dot placed between normal and superconducting reservoirs, and coupled to a Majorana nanowire: a topological superconducting segment hosting Majorana bound states (MBSs) at the opposite ends. It is demonstrated that if highly nonlocal and nonoverlapping MBSs are formed in the system, the zero-bias Andreev conductance through the dot exhibits characteristic isoconductance profiles with the shape depending on the spin asymmetry of the coupling between the dot and the topological superconductor. Otherwise, for overlapping MBSs with less degree of nonlocality, the conductance is insensitive to the spin polarization and the isoconductance signatures disappear. This allows to propose an alternative experimental protocol for probing the nonlocality of the MBSs in Majorana nanowires.

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.

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 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

scholarly journals Dynamical and point symmetry of the Kondo effect in triangular quantum dot

2005 ◽  
Vol 29 (1-2) ◽  
pp. 334-340 ◽  
Author(s):  
Yshai Avishai ◽  
Tetyana Kuzmenko ◽  
Konstantin Kikoin
Keyword(s):  
Quantum Dot ◽  
Kondo Effect ◽  
Point Symmetry
Sign in / Sign up

Export Citation Format

Share Document