Thermal rectification and negative differential thermal conductance based on a parallel-coupled double quantum-dot

Zhang, Yanchao; Su, Shanhe

doi:10.1016/j.physa.2021.126347

Cited by 10 publications

(3 citation statements)

References 75 publications

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“…Kuo and Chang's [35] subsequent theoretical study extended the analysis to the nonlinear response regime for silicon QDs embedded in amorphous silicon dioxide. Their device has a nanoscale vacuum layer between one electrode and the QD to suppress phonon thermal conductivity while allowing for electron tunnelling, thereby improving the thermoelectric figure of merit.…”

Section: Electronic Rectificationmentioning

confidence: 99%

A review of thermal rectification in solid-state devices

Malik

Fobelets

2022

J. Semicond.

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Thermal rectification, or the asymmetric transport of heat along a structure, has recently been investigated as a potential solution to the thermal management issues that accompany the miniaturization of electronic devices. Applications of this concept in thermal logic circuits analogous to existing electronics-based processor logic have also been proposed. This review highlights some of the techniques that have been recently investigated for their potential to induce asymmetric thermal conductivity in solid-state structures that are composed of materials of interest to the electronics industry. These rectification approaches are compared in terms of their quantitative performance, as well as the range of practical applications that they would be best suited to. Techniques applicable to a range of length scales, from the continuum regime to quantum dots, are discussed, and where available, experimental findings that build upon numerical simulations or analytical predictions are also highlighted.

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Section: Electronic Rectificationmentioning

confidence: 99%

A review of thermal rectification in solid-state devices

Malik

Fobelets

2022

J. Semicond.

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“…In the context of this paper, the rectifying devices based on quantum dots are of special interest [10][11][12][13][14][15][16][17][18][19][20][21][22][23]. They consist of a single or more quantum dots coupled to two external reservoirs.…”

Section: Introductionmentioning

confidence: 99%

Four terminal quantum dot as an efficient rectifier of heat and charge currents

Wysokiński¹

2023

Preprint

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We propose an efficient method of heat rectification in a simple system consisting of a quantum dot asymmetrically coupled to four mutually perpendicular electrodes. In such a device the Hall-like charge and heat currents appear in response to the voltage bias or temperature difference between one pair of electrodes. Even though both longitudinal (along the bias) and Hall-like (perpendicular to the bias) currents are rectified under appropriate conditions, the rectification factor is typically much bigger for the latter currents. This is true for heat and charge flow. The Hall-like currents are predicted to exist in linear as well as non-linear transport regimes and require broken mirror symmetry but not time reversal symmetry. The linear effect exists only in geometry which breaks two inversion symmetries along two pairs of electrically coupled terminals. The proposed system is attainable within current technology and provides novel platform of simultaneous heat and charge management at the nanoscale.

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“…Here we illustrate that the three-terminal configuration effectively behaves as the diode. [39][40][41][42][43][44][45][46] Our system, renowned for its combined thermal and electrical transport capabilities, offers the potential for unconventional rectification effect. Notably, it can induce charge rectification owing to a temperature difference, in addition to the conventional charge rectification driven by voltage bias.…”

mentioning

confidence: 99%

Impact of Quantum Coherence on Inelastic Thermoelectric Devices: From Diode to Transistor

Cao 曹,

Han 韩,

Hao 郝

et al. 2024

Chinese Phys. Lett.

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We present a study on inelastic thermoelectric devices, wherein charge currents and electronic and phononic heat currents are intricately interconnected. The employment of double quantum dots in conjunction with a phonon reservoir positions them as promising candidates for quantum thermoelectric diodes and transistors. Within this study, we illustrate that quantum coherence yields significant charge and Seebeck rectification effects. It’s worth noting that while the thermal transistor effect is observable in the linear response regime, especially when phonon-assisted inelastic processes dominate the transport, quantum coherence does not enhance thermal amplification. Our work may provide valuable insights for the optimization of inelastic thermoelectric devices.

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Thermal rectification and negative differential thermal conductance based on a parallel-coupled double quantum-dot

Cited by 10 publications

References 75 publications

A review of thermal rectification in solid-state devices

A review of thermal rectification in solid-state devices

Four terminal quantum dot as an efficient rectifier of heat and charge currents

Impact of Quantum Coherence on Inelastic Thermoelectric Devices: From Diode to Transistor

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