scholarly journals Influence of assisted hopping interaction on the linear conductance of quantum dot

2019 ◽  
Vol 111 ◽  
pp. 190-200 ◽  
Author(s):  
G. Górski ◽  
K. Kucab
Keyword(s):  
Quantum Dot ◽  
Linear Conductance

Theoretical Study on the Transport through a Quantum Dots Array with a Side Quantum Dot

2011 ◽  
Vol 340 ◽  
pp. 331-336
Author(s):  
Hai Tao Yin ◽  
Xiao Jie Liu ◽  
Wei Long Wan ◽  
Cheng Bao Yao ◽  
Li Na Bai ◽  
...  
Keyword(s):  
Quantum Dots ◽  
Green Function ◽  
Energy Level ◽  
Quantum Dot ◽  
Quantum Interference ◽  
Theoretical Study ◽  
Equation Of Motion ◽  
Function Technique ◽  
Motion Method ◽  
Linear Conductance

We studied transport properties through a noninteracting quantum dots array with a side quantum dot employing the equation of motion method and Green function technique. The linear conductance has been calculated numerically. It is shown that an antiresonance always pinned at the energy level of side quantum dot. The conductance develops Fano line shape when the side quantum dot level is not aligned with that of the quantum dots in the array due to quantum interference through different channels.

Linear Conductance through Parallel Quantum Dot Dimer below the Kondo Temperature

1999 ◽  
Vol 38 (Part 1, No. 1B) ◽  
pp. 315-318 ◽  
Author(s):  
Tomosuke Aono ◽  
Mikio Eto ◽  
Kiyoshi Kawamura
Keyword(s):  
Quantum Dot ◽  
Kondo Temperature ◽  
Linear Conductance

scholarly journals Investigations of Optical Coulomb Blockade Oscillations in Plasmonic Nanoparticle Dimers

2022 ◽  
Vol 2022 ◽  
pp. 1-6
Author(s):  
Lamessa Gudata ◽  
Jule Leta Tesfaye ◽  
Abela Saka ◽  
R. Shanmugam ◽  
L. Priyanka Dwarampudi ◽  
...  
Keyword(s):  
Quantum Dot ◽  
Electric Fields ◽  
Gate Voltage ◽  
Coulomb Blockade ◽  
Hot Spot ◽  
Plasmonic Nanoparticle ◽  
Basic Physics ◽  
The Subject ◽  
Tunnelling Current ◽  
Linear Conductance

The exploration of Coulomb blockade oscillations in plasmonic nanoparticle dimers is the subject of this study. When two metal nanoparticles are brought together at the end of their journey, tunnelling current prevents an infinite connection dipolar plasmon and an infinite amplification in the electric fields throughout the hot spot in between nanoparticles from occurring. One way to think about single-electron tunnelling through some kind of quantum dot is to think about Coulomb blockage oscillations in conductance. The electron transport between the dot and source is considered. The model of study is the linear conductance skilled at describing the basic physics of electronic states in the quantum dot. The linear conductance through the dot is defined as G = lim ⟶ 0 I / V in the limit of infinity of small bias voltage. We discuss the classical and quantum metallic Coulomb blockade oscillations. Numerically, the linear conductance was plotted as a function gate voltage. The Coulomb blockade oscillation occurs as gate voltage varies. In the valleys, the conductance falls exponentially as a function gate voltage. As a result of our study, the conductance is constant at high temperature and does not show oscillation in both positive and negative gate voltages. At low temperature, conductance shows oscillation in both positive and negative gate voltages.

LINEAR CONDUCTANCE AND TUNNEL MAGNETORESISTANCE IN A RASHBA QUANTUM DOT RING COUPLED TO FERROMAGNETIC LEADS

2011 ◽  
Vol 25 (03) ◽  
pp. 193-201
Author(s):  
FENG CHI ◽  
LING HUANG ◽  
JIA ZHAO
Keyword(s):  
Quantum Dot ◽  
Electronic Transport ◽  
Function Theory ◽  
Peak Position ◽  
Orbit Interaction ◽  
Quantum Ring ◽  
Tunnel Magnetoresistance ◽  
Ferromagnetic Electrodes ◽  
Rashba Spin ◽  
Linear Conductance

Spin-dependent electronic transport through a quantum ring with a quantum dot (QD) inserted in one of its arms is investigated within the Keldysh Green's function theory. We consider that the ring is connected to external ferromagnetic electrodes and there is Rashba spin-orbit interaction (SOI) in the QD. It is found that the anomalous tunnel magnetoresistance (TMR) peak originated from the electron correlations is split into two by the direct coupling between the two leads, with the two normal Coulomb resonances unchanged. The peak position and the magnitude of the conductance and the TMR can be controlled in terms of the SOI-induced phase factor, which can be adjusted by the gate voltage or the structure parameters. The present device should be realizable within present technology and may have practical usage in spintronics.

The Electronic Transports Technology in a T-Shaped Double Quantum Dot

2013 ◽  
Vol 859 ◽  
pp. 542-546
Author(s):  
An Mei Wang
Keyword(s):  
Quantum Dot ◽  
Double Quantum ◽  
Ferromagnetic Electrodes ◽  
Double Quantum Dot ◽  
Conductance Spectrum ◽  
Fano Interference ◽  
New Type ◽  
Linear Conductance

We study the phonon-assisted Fano interference of the linear conductance spectrum by taking into account the interdot-phonon exchange in a T-shaped double quantum dot (QD), where a central QD is coupled to a side QD and two nonmagnetic or ferromagnetic electrodes. Unlike the usual Fano interference between different elastic channels,this new-type Fano interference is shown to arise from electron waves tunneling coherently through phonon-assisted bonding and antibonding states.

Biodistribution 18F-markierter Quantum Dot-Antikörper-Biokonjugate

2019 ◽  
Author(s):  
O Mishchenko ◽  
A Schildan ◽  
O Sabri ◽  
M Patt
Keyword(s):  
Quantum Dot

Synchronization of Chaotic Quantum Dot Light Emitting Diodes under Optical Feedback Effect

2020 ◽  
pp. 144-148
Keyword(s):  
Quantum Dot ◽  
Delay Time ◽  
Chaos Synchronization ◽  
Optical Feedback ◽  
Light Emitting Diode ◽  
Feedback Effect ◽  
Complete Synchronization ◽  
Light Emitting ◽  
Coupling Methods ◽  
Coupling Parameters

Chaos synchronization of delayed quantum dot light emitting diode has been studied theortetically which are coupled via the unidirectional and bidirectional. at synchronization of chaotic, The dynamics is identical with delayed optical feedback for those coupling methods. Depending on the coupling parameters and delay time the system exhibits complete synchronization, . Under proper conditions, the receiver quantum dot light emitting diode can be satisfactorily synchronized with the transmitter quantum dot light emitting diode due to the optical feedback effect.

Vertical-cavity emitting devices with quantum-dot structures

2001 ◽  
Vol 171 (8) ◽  
pp. 855
Author(s):  
Viktor M. Ustinov ◽  
N.A. Maleev ◽  
Aleksei E. Zhukov ◽  
A.R. Kovsh ◽  
A.V. Sakharov ◽  
...  
Keyword(s):  
Quantum Dot ◽  
Vertical Cavity
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