scholarly journals Real-time renormalization group and cutoff scales in nonequilibrium applied to an arbitrary quantum dot in the Coulomb blockade regime

2007 ◽  
Vol 76 (16) ◽  
Author(s):  
Thomas Korb ◽  
Frank Reininghaus ◽  
Herbert Schoeller ◽  
Jürgen König
Keyword(s):  
Renormalization Group ◽  
Quantum Dot ◽  
Real Time ◽  
Coulomb Blockade ◽  
Coulomb Blockade Regime ◽  
Arbitrary Quantum

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 Quantum interference and structure-dependent orbital-filling effects on the thermoelectric properties of quantum dot molecules

2015 ◽  
Vol 17 (29) ◽  
pp. 19386-19393 ◽  
Author(s):  
Chih-Chieh Chen ◽  
David M. T. Kuo ◽  
Yia-Chung Chang
Keyword(s):  
Quantum Dot ◽  
Thermoelectric Properties ◽  
Anderson Model ◽  
Coulomb Blockade ◽  
Quantum Interference ◽  
Figure Of Merit ◽  
Quantum Dot Molecules ◽  
High Figure ◽  
Full Solution ◽  
Coulomb Blockade Regime

The quantum interference and orbital filling effects on the thermoelectric (TE) properties of quantum dot (QD) molecules with high figure of merit are illustrated via the full solution to the Hubbard–Anderson model in the Coulomb blockade regime.

Electrical Pump and Probe Measurements of a Quantum Dot in the Coulomb Blockade Regime

2003 ◽  
Vol 42 (Part 1, No. 7B) ◽  
pp. 4804-4808
Author(s):  
Toshimasa Fujisawa ◽  
David Guy Austing ◽  
Yoshiro Hirayama ◽  
Seigo Tarucha
Keyword(s):  
Quantum Dot ◽  
Coulomb Blockade ◽  
Pump And Probe ◽  
Coulomb Blockade Regime ◽  
Probe Measurements

scholarly journals Sawtooth-like thermopower oscillations of a quantum dot in the Coulomb blockade regime

1994 ◽  
Vol 9 (5S) ◽  
pp. 903-906 ◽  
Author(s):  
L Molenkamp ◽  
A A M Staring ◽  
B W Alphenaar ◽  
H van Houten ◽  
C W J Beenakker
Keyword(s):  
Quantum Dot ◽  
Coulomb Blockade ◽  
Coulomb Blockade Regime
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