Geometry dependence of the energy levels in silicon isolated double quantum-dots

2005 ◽  
Vol 78-79 ◽  
pp. 195-200 ◽  
Author(s):  
M.G. Tanner ◽  
E.G. Emiroglu ◽  
D.G. Hasko ◽  
D.A. Williams
Keyword(s):  
Quantum Dots ◽  
Energy Levels ◽  
Double Quantum ◽  
Double Quantum Dots ◽  
Geometry Dependence

Spin accumulation in the parallel-coupled double quantum dots with Rashba spin-orbit interaction connected with ferromagnetic and superconducting electrodes

2015 ◽  
Vol 29 (25) ◽  
pp. 1550145
Author(s):  
Cheng-Zhi Ye ◽  
Wei-Tao Lu ◽  
Chang-Tan Xu
Keyword(s):  
Quantum Dots ◽  
Spin Polarization ◽  
Energy Levels ◽  
Orbit Interaction ◽  
Double Quantum ◽  
Spin Accumulation ◽  
Spin Orbit ◽  
Spin Orbit Interaction ◽  
Double Quantum Dots ◽  
Rashba Spin

Using the standard nonequilibrium Green’s function techniques, we investigate the effect of Rashba spin-orbit interaction (RSOI) and ferromagnetic electrode on the spin accumulation in the parallel-coupled double quantum dots coupled with a ferromagnetic and a superconducting electrode. It is demonstrated that FM electrode cannot induce the spin polarization of Andreev reflection (AR) current, but can induce the spin accumulation in the QDs. However, RSOI can lead to the spin polarization of AR current as well as the spin accumulation in the QDs. In the existence of RSOI, complete spin-polarized QD can be achieved with negative bias voltage [Formula: see text], which is the most significant advantage of our device. When energy levels [Formula: see text] and the interdot coupling strength [Formula: see text], the maximum value of spin accumulation in this paper is obtained as 0.7. The results may be useful on the design of spintronic devices.

scholarly journals Interacting holes in Si and Ge double quantum dots: From a multiband approach to an effective-spin picture

2021 ◽  
Vol 104 (3) ◽  
Author(s):  
Andrea Secchi ◽  
Laura Bellentani ◽  
Andrea Bertoni ◽  
Filippo Troiani
Keyword(s):  
Quantum Dots ◽  
Double Quantum ◽  
Effective Spin ◽  
Double Quantum Dots

scholarly journals Effective theory of monolayer TMDC double quantum dots

2D Materials ◽  
2018 ◽  
Vol 5 (3) ◽  
pp. 035031 ◽  
Author(s):  
Alessandro David ◽  
Guido Burkard ◽  
Andor Kormányos
Keyword(s):  
Quantum Dots ◽  
Effective Theory ◽  
Double Quantum ◽  
Double Quantum Dots

scholarly journals Spin-dependent thermoelectric transport through double quantum dots

2012 ◽  
Vol 21 (11) ◽  
pp. 117310 ◽  
Author(s):  
Qiang Wang ◽  
Hai-Qing Xie ◽  
Hu-Jun Jiao ◽  
Zhi-Jian Li ◽  
Yi-Hang Nie
Keyword(s):  
Quantum Dots ◽  
Double Quantum ◽  
Thermoelectric Transport ◽  
Double Quantum Dots

Fabrication and characterization of p-channel Si double quantum dots

2014 ◽  
Vol 105 (11) ◽  
pp. 113110 ◽  
Author(s):  
Ko Yamada ◽  
Tetsuo Kodera ◽  
Tomohiro Kambara ◽  
Shunri Oda
Keyword(s):  
Quantum Dots ◽  
Double Quantum ◽  
Double Quantum Dots ◽  
Fabrication And Characterization

Electron spin resonance in double quantum dots

2008 ◽  
Vol 40 (5) ◽  
pp. 1457-1459 ◽  
Author(s):  
Rafael Sánchez ◽  
Carlos López-Monís ◽  
Jesús Iñarrea ◽  
Gloria Platero
Keyword(s):  
Quantum Dots ◽  
Electron Spin Resonance ◽  
Electron Spin ◽  
Double Quantum ◽  
Double Quantum Dots ◽  
Spin Resonance
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