Cooperative Spin Caloritronic Devices

Lu, Jincheng; Zhuo, Fengjun; Zhen, Sun; Jiang, Jian‐Hua

doi:10.30919/esee8c353

Cited by 6 publications

(4 citation statements)

References 52 publications

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“…Although much excellent work has been devoted to studying the effects of electron–phonon [ 47 , 48 ], electron–photon [ 49 ], and electron–electron [ 50 , 51 , 52 , 53 ] interactions on thermoelectric transport, discussions of thermoelectric transistors and diodes in a strong coupling regime are still lacking. In this work, we investigated the inelastic thermoelectric transport in a single QD that was strongly coupled to photons residing inside a microwave cavity [ 54 , 55 , 56 , 57 , 58 , 59 , 60 , 61 , 62 , 63 , 64 ]. Strong or even ultra-strong couplings provide a great avenue for realizing novel quantum devices.…”

Section: Introductionmentioning

confidence: 99%

Thermoelectric Rectification and Amplification in Interacting Quantum-Dot Circuit-Quantum-Electrodynamics Systems

Wang

et al. 2023

Entropy

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Thermoelectric rectification and amplification were investigated in an interacting quantum-dot circuit-quantum-electrodynamics system. By applying the Keldysh nonequilibrium Green’s function approach, we studied the elastic (energy-conserving) and inelastic (energy-nonconserving) transport through a cavity-coupled quantum dot under the voltage biases in a wide spectrum of electron–electron and electron–photon interactions. While significant charge and Peltier rectification effects were found for strong light–matter interactions, the dependence on electron–electron interaction could be nonmonotonic and dramatic. Electron–electron interaction-enhanced transport was found under certain resonance conditions. These nontrivial interaction effects were found in both linear and nonlinear transport regimes, which manifested in charge and thermal currents, rectification effects, and the linear thermal transistor effect.

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Section: Introductionmentioning

confidence: 99%

Thermoelectric Rectification and Amplification in Interacting Quantum-Dot Circuit-Quantum-Electrodynamics Systems

Wang

et al. 2023

Entropy

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“…On the other hand, the rise of mesoscopic thermoelectrics has partially revived the study on heat transport in mesoscopic systems [28][29][30][31][32][33][34]. The thermoelectric effect, which enables the conversion of heat into electricity and vice versa, can be exploited to harvest waste heat and covert the heat to useful electric power [35], Highly efficient thermoelectric devices require salient control over heat and charge conduction [36][37][38][39]. With the knowledge of mesoscopic physics, it may be possible to harness heat and charge transport in unprecedented ways.…”

Section: Introductionmentioning

confidence: 99%

Brownian thermal transistors and refrigerators in mesoscopic systems

Lu,

Wang,

Wang

et al. 2020

Preprint

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Fluctuations are significant in mesoscopic systems and of particular importance in understanding quantum transport. Here, we show that fluctuations can be considered as a resource for the operations of open quantum systems as functional devices. We derive the statistics of the thermal transistor amplification factor and the cooling-by-heating refrigerator efficiency under the Gaussian fluctuation framework. Statistical properties of the stochastic thermal transistor and the cooling-byheating efficiency are revealed in the linear-response regime. We clarify the unique role of inelastic processes on thermal transport in mesoscopic systems. We further show that elastic and inelastic processes lead to different bounds based on the linear transport coefficients by establishing a generic theoretical framework for mesoscopic heat transport, which treats electron and bosonic collective excitations in an equal-footing manner. The underlying physics are illustrated concretely using a double-quantum-dot three-terminal system, though the theory applies to more general systems.

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“…The study of thermoelectric transport at nanoscales 1-5 is important at least for two reasons. First, it is a realm where mesoscopic fluctuations and dissipations work together with quantum mechanics [6][7][8][9][10][11][12][13][14][15][16][17][18] . Second, nanostructured materials are important routes toward high thermoelectric efficiency and power, as motivated by the seminal works of Hicks and Dresselhaus [19][20][21][22] .…”

Section: Introductionmentioning

confidence: 99%

“…Second, nanostructured materials are important routes toward high thermoelectric efficiency and power, as motivated by the seminal works of Hicks and Dresselhaus [19][20][21][22] . While most of the studies are based on elastic transport processes, recent researches found that inelastic transport processes lead to phenomena that have not been found in elastic transport 16,[23][24][25][26][27][28][29] . The first example is the cooling by heating effect in three-terminal (i.e., two electronic electrodes and a bosonic terminal) thermoelectric transport where one of the two electronic reservoirs can be cooled (the other one heated) by heat injection from the bosonic reservoir [30][31][32] .…”

Section: Introductionmentioning

confidence: 99%

Unconventional four-terminal thermoelectric transport due to inelastic transport: cooling by transverse current, transverse thermoelectric effect and Maxwell demon

Jiang,

Lu,

Imry

2020

Preprint

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We show that in mesoscopic four-terminal thermoelectric devices with two electrodes (the source and the drain) and two heat baths, inelastic scattering processes can lead to unconventional thermoelectric transport. The source (or the drain) can be cooled by passing a thermal current between the two heat baths, with no net heat exchange between the heat baths and the electrodes. This effect, termed as cooling by heat current, is a mesoscopic heat drag effect. In addition, there is a transverse thermoelectric effect where electrical current and power can be generated by a transverse temperature bias (i.e., the temperature bias between the two heat baths). This transverse thermoelectric effect, originates from inelastic scattering processes, may have advantages for improved figures of merit and power factor due to spatial separation of charge and heat transport. We study the Onsager current-affinity relations, the linear-response transport properties, and the transverse thermoelectric figure of merit of the four-terminal thermoelectric devices for various system parameters. In addition, we investigate the efficiency and power of the cooling by transverse current effect in both linear and nonlinear transport regimes. We also demonstrate that by exploiting the inelastic transport in the quantum-dot four-terminal systems, a type of Maxwell's demon can be realized using nonequilibrium heat baths.

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Cooperative Spin Caloritronic Devices

Cited by 6 publications

References 52 publications

Thermoelectric Rectification and Amplification in Interacting Quantum-Dot Circuit-Quantum-Electrodynamics Systems

Thermoelectric Rectification and Amplification in Interacting Quantum-Dot Circuit-Quantum-Electrodynamics Systems

Brownian thermal transistors and refrigerators in mesoscopic systems

Unconventional four-terminal thermoelectric transport due to inelastic transport: cooling by transverse current, transverse thermoelectric effect and Maxwell demon

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