Impurities-contributed abnormal thermoelectric effect in a parallel double quantum dot structure

2014 ◽  
Vol 14 (1) ◽  
pp. 34-45 ◽  
Author(s):  
Wei-Jiang Gong ◽  
Hui-Min Wang ◽  
Yu Han ◽  
Si-Jing Zhang
Keyword(s):  
Quantum Dot ◽  
Double Quantum ◽  
Thermoelectric Effect ◽  
Double Quantum Dot

The influence of side-coupled quantum dots on thermoelectric effect of parallel-coupled double quantum dot system

2018 ◽  
Vol 545 ◽  
pp. 377-382 ◽  
Author(s):  
Jiyuan Bai ◽  
Zelong He ◽  
Li Li ◽  
Suihu Dang ◽  
Yadong Li ◽  
...  
Keyword(s):  
Quantum Dots ◽  
Quantum Dot ◽  
Double Quantum ◽  
Thermoelectric Effect ◽  
Coupled Quantum Dots ◽  
Double Quantum Dot

Thermoelectric Transport in a Double-Quantum-Dot Coupled to Majorana Zero Modes

2021 ◽  
Vol 16 (5) ◽  
pp. 753-761
Author(s):  
Jing Wang ◽  
Lian-Liang Sun ◽  
Feng Chi ◽  
Zhen-Guo Fu
Keyword(s):  
Quantum Dot ◽  
Function Technique ◽  
Double Quantum ◽  
Thermoelectric Effect ◽  
Thermoelectric Transport ◽  
Zero Modes ◽  
Symmetric Point ◽  
Double Quantum Dot ◽  
Sign Change ◽  
Non Equilibrium Green’S Function

Thermoelectric transport through a double-quantum-dot (DQD) connected to the left and right leads is theoretically investigated in the framework of non-equilibrium Green’s function technique. We consider that the dots are also coupled to Majorana zero modes (MZMs) prepared at the two ends of a topological superconductor nanowire. It is found that the sign change of thermopower, which is promising in the detection of MZMs, can be realized by tuning several system’s parameters related to the MZMs, such as the coupling strength between the dots and the MZMs, the direct coupling between the MZMs, or even the magnetic flux penetrating through the structure. The above parameters also lead to significant enhancement of the thermopower and thermoelectric figure of merit (FOM), which indicates the conversion efficiency between heat and electrical energies. We also find that in this DQD system, both the thermopower and FOM are simultaneously enhanced by the MZMs around the electron-hole symmetric point, an ideal phenomenon in applications of thermoelectric effect. In addition, the thermoelectric effect is remarkably enhanced by the direct hybridization between the MZMs, which is very different from the case in single-dot structure.

scholarly journals Large Voltage-Tunable Spin Valve Based on a Double Quantum Dot

2021 ◽  
Vol 16 (1) ◽  
Author(s):  
Patrycja Tulewicz ◽  
Kacper Wrześniewski ◽  
Szabolcs Csonka ◽  
Ireneusz Weymann
Keyword(s):  
Quantum Dot ◽  
Spin Valve ◽  
Double Quantum ◽  
Double Quantum Dot

Fano Effect in T-Shaped Double Quantum Dot Structure with Decoherence Effect

2008 ◽  
Vol 49 (3) ◽  
pp. 771-776 ◽  
Author(s):  
Gao Wen-Zhu ◽  
Gong Wei-Jiang ◽  
Zheng Yi-Song ◽  
Liu Yu ◽  
Lü Tian-Quan
Keyword(s):  
Quantum Dot ◽  
Double Quantum ◽  
Fano Effect ◽  
Double Quantum Dot ◽  
Decoherence Effect

Electron transport in T-shaped double quantum dot structure

2021 ◽  
Vol 53 (8) ◽  
Author(s):  
Mohammed A. A. Abbas ◽  
Lafy F. Al-Badry ◽  
Amin H. Al-Khursan
Keyword(s):  
Electron Transport ◽  
Quantum Dot ◽  
Double Quantum ◽  
Double Quantum Dot

Double quantum dot-like transport in controllably doped graphene nanoribbon

2021 ◽  
Vol 118 (8) ◽  
pp. 083105
Author(s):  
Zhongwang Wang ◽  
Yahua Yuan ◽  
Xiaochi Liu ◽  
Manoharan Muruganathan ◽  
Hiroshi Mizuta ◽  
...  
Keyword(s):  
Quantum Dot ◽  
Graphene Nanoribbon ◽  
Double Quantum ◽  
Double Quantum Dot ◽  
Doped Graphene

Geometric phase of an open double-quantum-dot system detected by a quantum point contact

2020 ◽  
Vol 29 (3) ◽  
pp. 030302
Author(s):  
Qian Du ◽  
Kang Lan ◽  
Yan-Hui Zhang ◽  
Lu-Jing Jiang
Keyword(s):  
Quantum Dot ◽  
Geometric Phase ◽  
Point Contact ◽  
Quantum Point Contact ◽  
Double Quantum ◽  
Double Quantum Dot ◽  
Quantum Point
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