scholarly journals Tunneling density of states in quantum dots with anisotropic exchange

2015 ◽  
Vol 92 (3) ◽  
Author(s):  
A. U. Sharafutdinov ◽  
I. S. Burmistrov
Keyword(s):  
Quantum Dots ◽  
Density Of States ◽  
Anisotropic Exchange

A numerically efficient approach to the modelling of double-Qdot channels

2013 ◽  
Vol 2 (1) ◽  
Author(s):  
A. Shamloo ◽  
A.P. Sowa
Keyword(s):  
Quantum Dots ◽  
Quantum Computing ◽  
Ab Initio ◽  
Quantum System ◽  
Electronic Properties ◽  
Density Of States ◽  
Potential Application ◽  
Ab Initio Simulation ◽  
Efficient Approach ◽  
Essential Properties

AbstractWe consider the electronic properties of a system consisting of two quantum dots in physical proximity, which we will refer to as the double-Qdot. Double-Qdots are attractive in light of their potential application to spin-based quantum computing and other electronic applications, e.g. as specialized sensors. Our main goal is to derive the essential properties of the double-Qdot from a model that is rigorous yet numerically tractable, and largely circumvents the complexities of an ab initio simulation. To this end we propose a novel Hamiltonian that captures the dynamics of a bi-partite quantum system, wherein the interaction is described via a Wiener-Hopf type operator. We subsequently describe the density of states function and derive the electronic properties of the underlying system. The analysis seems to capture a plethora of electronic profiles, and reveals the versatility of the proposed framework for double-Qdot channel modelling.

scholarly journals Electron Spectrum and Tunneling Current of the Toroidal and Helical Graphene Nanoribbon-Quantum Dots Contact

2011 ◽  
Vol 2011 ◽  
pp. 1-5 ◽  
Author(s):  
Mikhail B. Belonenko ◽  
Nikolay G. Lebedev ◽  
Alexander V. Zhukov ◽  
Natalia N. Yanyushkina
Keyword(s):  
Quantum Dots ◽  
Dirac Equation ◽  
Density Of States ◽  
Electron Spectrum ◽  
Tunneling Current ◽  
Graphene Nanoribbon ◽  
Curved Space ◽  
Long Wave ◽  
Current Voltage ◽  
Current Voltage Characteristics

We study the electron spectrum and the density of states of long-wave electrons in the curved graphene nanoribbon based on the Dirac equation in a curved space-time. The current-voltage characteristics for the contact of nanoribbon-quantum dot have been revealed. We also analyze the dependence of the specimen properties on its geometry.

Two coupled quantum dots with a continuous density of states

1998 ◽  
Vol 24 (6) ◽  
pp. 435-441 ◽  
Author(s):  
N.C. Van Der Vaart ◽  
L.P. Kouwenhoven ◽  
S.F. Godijn ◽  
Y.V. Nazarov ◽  
C.J.P.M. Harmans ◽  
...  
Keyword(s):  
Quantum Dots ◽  
Density Of States ◽  
Coupled Quantum Dots ◽  
Continuous Density

scholarly journals Bright-exciton fine structure and anisotropic exchange inCdSenanocrystal quantum dots

2006 ◽  
Vol 73 (24) ◽  
Author(s):  
M. Furis ◽  
H. Htoon ◽  
M. A. Petruska ◽  
V. I. Klimov ◽  
T. Barrick ◽  
...  
Keyword(s):  
Quantum Dots ◽  
Fine Structure ◽  
Anisotropic Exchange

scholarly journals Anisotropic Exchange Interaction between p-Shell Electron and s-Shell Hole in CdTe/ZnTe Quantum Dots

2009 ◽  
Vol 116 (5) ◽  
pp. 882-884 ◽  
Author(s):  
T. Kazimierczuk ◽  
A. Golnik ◽  
M. Goryca ◽  
P. Wojnar ◽  
J.A. Gaj ◽  
...  
Keyword(s):  
Quantum Dots ◽  
Exchange Interaction ◽  
Shell Electron ◽  
Anisotropic Exchange Interaction ◽  
Anisotropic Exchange

Anisotropic exchange splitting of excitons affected by ΓX mixing in (In,Al)As/AlAs quantum dots: Microphotoluminescence and macrophotoluminescence measurements

2019 ◽  
Vol 100 (20) ◽  
Author(s):  
J. Rautert ◽  
M. V. Rakhlin ◽  
K. G. Belyaev ◽  
T. S. Shamirzaev ◽  
A. K. Bakarov ◽  
...  
Keyword(s):  
Quantum Dots ◽  
Exchange Splitting ◽  
Anisotropic Exchange
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