scholarly journals Controllable continuous evolution of electronic states in a single quantum ring

2018 ◽  
Vol 97 (4) ◽  
Author(s):  
Tapash Chakraborty ◽  
Aram Manaselyan ◽  
Manuk Barseghyan ◽  
David Laroze
Keyword(s):  
Electronic States ◽  
Quantum Ring ◽  
Single Quantum ◽  
Continuous Evolution

Spin flip in single quantum ring with Rashba spin–orbit interation

2018 ◽  
Vol 27 (3) ◽  
pp. 037201
Author(s):  
Duan-Yang Liu ◽  
Jian-Bai Xia
Keyword(s):  
Quantum Ring ◽  
Spin Orbit ◽  
Single Quantum ◽  
Rashba Spin ◽  
Spin Flip

scholarly journals Excited exciton and biexciton localised states in a single quantum ring

2013 ◽  
Vol 103 (17) ◽  
pp. 173106 ◽  
Author(s):  
H. D. Kim ◽  
K. Kyhm ◽  
R. A. Taylor ◽  
A. A. L. Nicolet ◽  
M. Potemski ◽  
...  
Keyword(s):  
Quantum Ring ◽  
Single Quantum ◽  
Localised States

Finite Element Method With Linear Rectangular Element for Solving Nanoscale InAs⁄GaAs Quantum Ring Structures

2018 ◽  
pp. 347
Author(s):  
Eman ali Hussain ◽  
Jamil A. Al-Hawasy ◽  
Lamyaa H. Ali
Keyword(s):  
Finite Element Method ◽  
Finite Element ◽  
Effective Mass ◽  
Piecewise Linear ◽  
Energy Levels ◽  
Electronic States ◽  
Piecewise Linear Function ◽  
Quantum Ring ◽  
Mass Approximation ◽  
The One

        This paper is concerned with the solution of the nanoscale structures consisting of the   with an effective mass envelope function theory, the electronic states of the  quantum ring are studied.  In calculations, the effects due to the different effective masses of electrons in and out the rings are included. The energy levels of the electron are calculated in the different shapes of rings, i.e., that the inner radius of rings sensitively change the electronic states. The energy levels of the electron are not sensitively dependent on the outer radius for large rings. The structures of  quantum rings are studied by the one electronic band Hamiltonian effective mass approximation, the energy- and position-dependent on electron effective mass approximation, and the spin-dependent on the Ben Daniel-Duke boundary conditions. In the description of the Hamiltonian matrix elements, the Finite elements method with different base piecewise linear function is adopted. The non-linear energy confinement problem is solved approximately by using the Finite elements method with piecewise  linear function, to calculate the energy of the one electron states for the   quantum ring. The results of numerical example are compared for accuracy and efficiency with the finite element method of linear triangular element. This comparison shows that good results of numerical example.  

scholarly journals Asymmetry of localised states in a single quantum ring: Polarization dependence of excitons and biexcitons

2013 ◽  
Vol 102 (3) ◽  
pp. 033112 ◽  
Author(s):  
H. D. Kim ◽  
K. Kyhm ◽  
R. A. Taylor ◽  
G. Nogues ◽  
K. C. Je ◽  
...  
Keyword(s):  
Polarization Dependence ◽  
Quantum Ring ◽  
Single Quantum ◽  
Localised States

EFFECT OF DONOR IMPURITY ON AHARONOV–BOHM OSCILLATIONS IN A DOUBLE QUANTUM RING WITH GAUSSIAN CONFINEMENT

2018 ◽  
Vol 52 (3 (247)) ◽  
pp. 205-212
Author(s):  
V.N. Mughnetsyan
Keyword(s):  
Magnetic Field ◽  
External Magnetic Field ◽  
Electronic States ◽  
Quantum States ◽  
Outer Ring ◽  
Effective Control ◽  
Double Quantum ◽  
Quantum Ring ◽  
Donor Impurity ◽  
Aharonov Bohm

In this paper the effect of donor impurity on the Aharonov–Bohm oscillations of the electronic states in a double quantum ring with Gaussian confinement has been studied. Three different impurity positions: namely in the inner ring, in the outer ring and in the barrier between the rings, have been considered. It is shown that the energies of the two lowest states are almost constant, while for the higher levels the Aharonov–Bohm oscillations are observed. The obtained results indicate on the possibility of the effective control of the quantum states by means of donor impurity and external magnetic field.

Demonstration of MEMS-Controlled Electronic States in Single Quantum Dots

2003 ◽  
Author(s):  
T. Nakaoka ◽  
T. Kakitsuka ◽  
T. Saito ◽  
Y. Arakawa
Keyword(s):  
Quantum Dots ◽  
Electronic States ◽  
Single Quantum ◽  
Single Quantum Dots

scholarly journals Two electronic states in a quantum ring: Mathieu equation approach

2010 ◽  
Vol 248 ◽  
pp. 012048 ◽  
Author(s):  
N G Aghekyan ◽  
E M Kazaryan ◽  
L S Petrosyan ◽  
H A Sarkisyan
Keyword(s):  
Electronic States ◽  
Mathieu Equation ◽  
Quantum Ring ◽  
Equation Approach

Fractional oscillations of electronic states in a quantum ring

1996 ◽  
Vol 36 (7) ◽  
pp. 533-538 ◽  
Author(s):  
K Niemelä ◽  
P Pietiläinen ◽  
P Hyvönen ◽  
T Chakraborty
Keyword(s):  
Electronic States ◽  
Quantum Ring

Electronic States in Selectively Si-Doped N-AlGaAs/GaAs/N-AlGaAs Single Quantum Well Structures Grown by MBE

1985 ◽  
Vol 24 (Part 2, No. 4) ◽  
pp. L281-L283 ◽  
Author(s):  
Shigehiko Sasa ◽  
Junji Saito ◽  
Kazuo Nanbu ◽  
Tomonori Ishikawa ◽  
Satoshi Hiyamizu ◽  
...  
Keyword(s):  
Quantum Well ◽  
Electronic States ◽  
Single Quantum ◽  
Single Quantum Well ◽  
Quantum Well Structures ◽  
Si Doped
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