The current-induced heat generation in a quantum dot with Andreev-Fano resonance

2019 ◽  
Vol 126 (19) ◽  
pp. 195101
Author(s):  
Feng Jiang ◽  
Yonghong Yan ◽  
Shikuan Wang ◽  
Yijing Yan
Keyword(s):  
Quantum Dot ◽  
Heat Generation ◽  
Fano Resonance

scholarly journals Coulomb-Modified Fano Resonance in a One-Lead Quantum Dot

2004 ◽  
Vol 93 (10) ◽  
Author(s):  
A. C. Johnson ◽  
C. M. Marcus ◽  
M. P. Hanson ◽  
A. C. Gossard
Keyword(s):  
Quantum Dot ◽  
Fano Resonance

scholarly journals Fano resonance in a two-level quantum dot side-coupled to leads

2008 ◽  
Vol 77 (3) ◽  
Author(s):  
W.-R. Lee ◽  
Jaeuk U. Kim ◽  
H.-S. Sim
Keyword(s):  
Quantum Dot ◽  
Fano Resonance

scholarly journals Photon-assisted Fano resonance and corresponding shot noise in a quantum dot

2004 ◽  
Vol 69 (4) ◽  
Author(s):  
Zhongshui Ma ◽  
Yu Zhu ◽  
Xin-Qi Li ◽  
Tsung-han Lin ◽  
Zhao-Bin Su
Keyword(s):  
Quantum Dot ◽  
Shot Noise ◽  
Fano Resonance

scholarly journals Dual Negative Differential of Heat Generation in a Strongly Correlated Quantum Dot Side-Coupled to Majorana Bound States

2021 ◽  
Vol 9 ◽  
Author(s):  
Zhu-Hua Wang ◽  
Wen-Cheng Huang
Keyword(s):  
Quantum Dot ◽  
Heat Generation ◽  
Coulomb Blockade ◽  
Bound States ◽  
Interaction Strength ◽  
Local Heat ◽  
Transport Processes ◽  
Strongly Correlated ◽  
Majorana Bound States ◽  
Coulomb Blockade Regime

We study theoretically the properties of local heat originated from energy exchange between electrons passing through a quantum dot (QD) coupled to a phonon bath. The dot is sandwiched between two normal metal leads and also side-coupled to Majorana bound states (MBSs) formed at opposite ends of a topological superconductor nanowire. We find that in addition to the negative differential of heat generation (NDHG) in the Coulomb blockade regime, another NDHG emerges near the leads’ Fermi level due to the dot-MBS coupling. This dual NDHG effect is robust against the variation of intradot Coulomb interaction strength, and disappears if the QD is coupled to regular Fermions. Direct hybridization between the MBSs reduces their impacts on the electronic transport processes, and eliminates the dual NDHG effect. Our results show that the dual NDHG effect is quite efficient for inferring the existence of MBSs, and may remedy some limitations of the detection schemes relying on tunneling spectroscopy technique.

scholarly journals Heat Generation by Electrical Current in a Quantum Dot Hybridized to Majorana Nanowires

2021 ◽  
Vol 9 ◽  
Author(s):  
Zhu-Hua Wang
Keyword(s):  
Quantum Dot ◽  
Bias Voltage ◽  
Heat Generation ◽  
Bound States ◽  
Waste Heat ◽  
Electrical Current ◽  
Function Technique ◽  
Heat Current ◽  
Low Dimensional ◽  
Direct Hybridization

Heat current generated by electronic transport through a quantum dot (QD) coupled to both a phonon bath and a Majorana nanowire hosting Majorana bound states (MBSs) is theoretically studied in the framework of non-equilibrium Green’s function technique. The calculated numerical results show that electrical current can be either enhanced or suppressed by the combined influences of the phonon bath and the MBSs at certain bias voltage regimes. The enhancement and suppression of the current’s magnitude for a fixed bias voltage will be reversed due to the direct hybridization between the MBSs. The simultaneous coupling between both MBSs will amplify the function of the MBSs on the current, with the same unchanged and essential qualitative impacts. Heat generation by the electrical current can be fully adjusted by the dot–MBS coupling, direct hybridization between the MBSs, and positions of the dot level. By properly choosing the above parameters, heat generation can be suppressed even for increased electrical current, which is favorable in removing waste heat generated by electrical current flowing through low-dimensional circuits.

Heat generation by spin-polarized current in a quantum-dot spin battery

2015 ◽  
Vol 379 (6) ◽  
pp. 613-618 ◽  
Author(s):  
Feng Chi ◽  
Lian-Liang Sun ◽  
Jun Zheng ◽  
Yu Guo
Keyword(s):  
Quantum Dot ◽  
Heat Generation ◽  
Spin Polarized

Fano resonance and resonant localization of excitonic wave in one-dimensional quantum dot array with a ring

2016 ◽  
Vol 16 (3) ◽  
pp. 348-356 ◽  
Author(s):  
Suc-Kyoung Hong ◽  
Jae Seok Yoon ◽  
Seog Woo Nam ◽  
Hyung Jin Yang
Keyword(s):  
Quantum Dot ◽  
Fano Resonance ◽  
One Dimensional
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