Quantum-dot circuit-QED thermoelectric diodes and transistors

Lu, Jincheng; Wang, Rongqian; Ren, Jie; Kulkarni, Manas; Jiang, Jian‐Hua

doi:10.1103/physrevb.99.035129

Cited by 48 publications

(34 citation statements)

References 93 publications

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“…In practical applications, the first target is to find out the optimal energy efficiency and the condition that realizes the optimal energy efficiency for the functional materials/systems. 48,[50][51][52][53][54][55][56][57][58][59][60] A general theory was developed to fulfill this target for thermodynamic systems with arbitrary Onsager matrix (that may describe complex responses to multiple forces).…”

Section: Basic Theoretical Frameworkmentioning

confidence: 99%

Cooperative Spin Caloritronic Devices

Lu¹,

Zhuo²,

Zhen³

et al. 2019

ES Energy Environ.

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We report a concept of thermoelectric devices, cooperative spin caloritronics device (CSCD), where cooperation between two or more energy channels such as spin, charge and heat currents can significantly enhance energy efficiency of spin caloritronic devices. We derive the figure of merit and the maximum efficiency due to cooperative effect in analytic forms for a CSCD. Cooperative effects significantly improve the figure of merit and the maximum efficiency in spin caloritronic systems with multiple couplings effects. Several examples of CSCDs, including electrical and thermal current induced DW motion, spin-thermoelectric power generator and spin-thermoelectric cooling/heating, are studied to illustrate the usefulness of the cooperative effect. We compare the efficiency of CSCD with several recently proposed spin caloritronic devices. Our scheme provides a novel route to seek high performance materials and structures for future spin caloritronic devices.

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Section: Basic Theoretical Frameworkmentioning

confidence: 99%

Cooperative Spin Caloritronic Devices

Lu¹,

Zhuo²,

Zhen³

et al. 2019

ES Energy Environ.

Self Cite

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“…Examples include Green's function approaches [22,23,28,31], linear response methods [25], and full counting statistics with the hierarchical equations of motion [38] and quantum master equations [26,31], where strong lead couplings have also been considered. The impact of strong light-matter (rather than vibrational) coupling in thermoelectric devices has also been explored [51].…”

Section: Introductionmentioning

confidence: 99%

Strong coupling in thermoelectric nanojunctions: a reaction coordinate framework

Mcconnell

Nazir

2022

New J. Phys.

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We study a model of a thermoelectric nanojunction driven by vibrationally-assisted tunneling. We apply the reaction coordinate formalism to derive a master equation governing its thermoelectric performance beyond the weak electron-vibrational coupling limit. Employing full counting statistics we calculate the current flow, thermopower, associated noise, and efficiency without resorting to the weak vibrational coupling approximation. We demonstrate intricacies of the power-efficiency- precision trade-off at strong coupling, showing that the three cannot be maximised simultaneously in our model. Finally, we emphasise the importance of capturing non-additivity when considering strong coupling and multiple environments, demonstrating that an additive treatment of the environments can violate the upper bound on thermoelectric efficiency imposed by Carnot.

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“…The self-contained thermal devices were originally proposed as refrigerators to cool the cold bath [ 12 , 13 , 14 , 25 , 26 , 27 , 28 , 29 , 30 , 31 , 32 , 33 , 34 , 35 , 36 , 37 , 38 , 39 , 40 , 41 , 42 , 43 , 44 , 45 ], or as thermal engines to extract work [ 46 , 47 ]. Later, they were widely extended to a variety of cases, including the different interaction mechanisms, or for achieving various functions, such as heat current amplification [ 9 , 24 , 48 , 49 , 50 , 51 , 52 , 53 , 54 , 55 ], thermal rectification [ 19 , 20 , 21 , 54 , 55 , 56 , 57 , 58 , 59 , 60 ], thermal batteries [ 61 , 62 , 63 ], and thermometers [ 64 , 65 , 66 ]. It is a quite fundamental question for quantum thermodynamics as to...…”

Section: Introductionmentioning

confidence: 99%

Common Environmental Effects on Quantum Thermal Transistor

Liu

2021

Entropy

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Quantum thermal transistor is a microscopic thermodynamical device that can modulate and amplify heat current through two terminals by the weak heat current at the third terminal. Here we study the common environmental effects on a quantum thermal transistor made up of three strong-coupling qubits. It is shown that the functions of the thermal transistor can be maintained and the amplification rate can be modestly enhanced by the skillfully designed common environments. In particular, the presence of a dark state in the case of the completely correlated transitions can provide an additional external channel to control the heat currents without any disturbance of the amplification rate. These results show that common environmental effects can offer new insights into improving the performance of quantum thermal devices.

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Quantum-dot circuit-QED thermoelectric diodes and transistors

Cited by 48 publications

References 93 publications

Cooperative Spin Caloritronic Devices

Cooperative Spin Caloritronic Devices

Strong coupling in thermoelectric nanojunctions: a reaction coordinate framework

Common Environmental Effects on Quantum Thermal Transistor

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