Coupling in concentric double quantum rings

2007 ◽  
Vol 91 (13) ◽  
pp. 133116 ◽  
Author(s):  
A. Mühle ◽  
W. Wegscheider ◽  
R. J. Haug
Keyword(s):  
Double Quantum ◽  
Quantum Rings

Magnetic-field-induced electron transitions in concentric double quantum rings

2010 ◽  
Vol 7 (11-12) ◽  
pp. 2608-2611 ◽  
Author(s):  
José Maria Escartin ◽  
Francesc Malet ◽  
Marti Pi ◽  
Manuel Barranco
Keyword(s):  
Magnetic Field ◽  
Double Quantum ◽  
Quantum Rings ◽  
Electron Transitions

scholarly journals Eccentricity effects on the quantum confinement in double quantum rings

2011 ◽  
Vol 151 (17) ◽  
pp. 1200-1204 ◽  
Author(s):  
J. Costa e Silva ◽  
A. Chaves ◽  
G.A. Farias ◽  
M.H. Degani ◽  
R. Ferreira
Keyword(s):  
Quantum Confinement ◽  
Double Quantum ◽  
Quantum Rings

NAND/AND/NOT logic gates response in series of mesoscopic quantum rings

2019 ◽  
Vol 33 (34) ◽  
pp. 1950431 ◽  
Author(s):  
E. Dehghan ◽  
D. Sanavi Khoshnoud ◽  
A. S. Naeimi
Keyword(s):  
Current Density ◽  
Spin Current ◽  
Logic Gates ◽  
Nand Gate ◽  
Double Quantum ◽  
Device Performance ◽  
Quantum Rings ◽  
One Dimensional ◽  
Rashba Spin ◽  
In Series

There is a special class of logic gates, called universal gates, any one of which is sufficient to express any desired computation. The NAND gate is truly global, given that it is already known, each Boolean function can be represented in a circuit that contains only NOT and AND gates, it is sufficient to show that these gates can be defined from the NAND gate. The effect of Rashba spin-orbit interaction (SOI) on the gate response and spin current density in a series of non-interacting one-dimensional rings connected to some leads is studied theoretically within the waveguide theory. The gates response and spin current density are computed in geometry of the system containing two terminal double quantum rings. Also, the presence and absence of Rashba SOI are treated as the two inputs of the AND/NAND/NOT gates. Furthermore, simulation of the device performance demonstrates that vital improvement toward spintronic applications can be achieved by optimizing device parameters such as magnetic flux and Rashba coefficient.

States of an on-axis two-hydrogenic-impurity complex in concentric double quantum rings

2014 ◽  
Vol 378 (30-31) ◽  
pp. 2297-2302 ◽  
Author(s):  
M. R-Fulla ◽  
J.H. Marín ◽  
Y.A. Suaza ◽  
C.A. Duque ◽  
M.E. Mora-Ramos
Keyword(s):  
Double Quantum ◽  
Hydrogenic Impurity ◽  
Quantum Rings ◽  
Impurity Complex

Hydrostatic pressure effects on electron states in GaAs–(Ga,Al)As double quantum rings

2009 ◽  
Vol 105 (9) ◽  
pp. 094324 ◽  
Author(s):  
F. J. Culchac ◽  
N. Porras-Montenegro ◽  
A. Latgé
Keyword(s):  
Hydrostatic Pressure ◽  
Pressure Effects ◽  
Double Quantum ◽  
Electron States ◽  
Quantum Rings

Biexciton energies in concentric double quantum rings

2013 ◽  
Vol 113 (5) ◽  
pp. 053714 ◽  
Author(s):  
Ning Wang ◽  
De Liu ◽  
Xiaojun Kong
Keyword(s):  
Double Quantum ◽  
Quantum Rings

scholarly journals Electronic structure of few-electron concentric double quantum rings

2006 ◽  
Vol 73 (23) ◽  
Author(s):  
J. I. Climente ◽  
J. Planelles ◽  
M. Barranco ◽  
F. Malet ◽  
M. Pi
Keyword(s):  
Electronic Structure ◽  
Double Quantum ◽  
Quantum Rings
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