Quantum dot as thermal rectifier

Scheibner, Ralf; König, Markus; Reuter, D.; Wieck, A. D.; Gould, C.; Buhmann, H.; Molenkamp, L. W.

doi:10.1088/1367-2630/10/8/083016

Cited by 221 publications

(174 citation statements)

References 22 publications

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“…Theoretical models for thermal rectifiers are proposed relying on various mechanisms (Roberts and Walker, 2011), including different temperature-dependent thermal properties between dissimilar materials at a contact (Stevenson et al, 1991;Dames, 2009;Kobayashi et al, 2009), asymmetric design of nanostructure (Wu and Li, 2008;Yang et al, 2009), and quantum thermal systems, such as quantum dots and other quantum heterojunctions (Scheibner et al, 2007;Ruokola et al, 2009;Wu and Segal, 2009;Ren and Zhu, 2013a). Similar concepts are even extended to the spin Seebeck diode and transistor (Ren, 2013;Ren and Zhu, 2013b;Ren et al, 2013), and the multiferroic thermal diode (Chotorlishvili et al, 2015), multiferroic switch and memory .…”

Section: Introductionmentioning

confidence: 99%

Nonlinear Heat Radiation Induces Thermal Rectifier in Asymmetric Holey Composites

Zhu

Chen

et al. 2018

Front. Energy Res.

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Asymmetric design and nonlinearity are essential to give rise to thermal rectification. In addition to the linear Fourier's law of thermal conduction, we introduce the nonlinear thermal radiation following Stefan-Boltzmann law to asymmetric holey composites to realize the thermal rectifier. The thermal rectification results from the competition between the linear thermal conduction and the nonlinear thermal radiation, which we explain as a thermal resistor network with the linear and nonlinear components connected in series-parallel. All the results are confirmed by an analytical model that is composed of one central nonlinear thermal radiation region sandwiched by two linear conduction regions with different conductances. We can get the optimal rectification effect around the room temperature when the temperature difference is fixed, which allows the application of the designed materials to energy-saving buildings.

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Section: Introductionmentioning

confidence: 99%

Nonlinear Heat Radiation Induces Thermal Rectifier in Asymmetric Holey Composites

Zhu

Chen

et al. 2018

Front. Energy Res.

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“…In 2008 an experimental study by Scheibner et al showed thermally rectifying behavior in quantum dots when high in-plane magnetic fields are present as a result of the presence of a high orbital momentum state in the dot [93]. Their analysis showed a stronger coupling to the drain than the source when not in the ground state.…”

Section: Quantum Thermal Systemsmentioning

confidence: 99%

A review of thermal rectification observations and models in solid materials

Roberts

Walker

2011

International Journal of Thermal Sciences

325

283

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Thermal rectification is a phenomenon in which thermal transport along a specific axis is dependent upon the sign of the temperature gradient or heat current. This phenomenon offers improved thermal management of electronics as size scales continue to decrease and new technologies emerge by having directions of preferred thermal transport. For most applications where thermally rectifying materials could be of use they would need to exhibit one direction with high thermal conductivity to allow for efficient transport of heat from heat generating components to a sink and one direction with low conductivity to insulate the temperature and heat flux sensitive components. In the process of understanding and developing these materials multiple mechanisms have been found which produce thermally rectifying behavior and much work has been and is being done to improve our understanding of the mechanisms and how these mechanisms can be used with our improved ability to fabricate at the nanoscale to produce efficient materials which have high levels of thermal rectification.

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“…For example, if one could use phononic devices to control, direct, and utilize the heat generated in electronic circuits to add processing power, one would achieve an improvement over the present situation, where we face the major problem of removing the heat from the circuit, only to send it to waste. Directional thermal effects were first observed many years ago, but the past decade has seen several advances in the field of phononics, with models for thermal diodes [221,222] and experimental realizations of micro/nanoscopic solid-state thermal rectifiers [223,224]. Researchers have also proposed thermal transistors, gates, and memory [225][226][227].…”

Section: Beyond Electron Sources: What Else Do We Learn From Carbon Nmentioning

confidence: 99%

Carbon Nanotube Electron Sources: From Electron Beams to Energy Conversion and Optophononics

Nojeh

2014

ISRN Nanomaterials

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Carbon nanotubes have a host of properties that make them excellent candidates for electron emitters. A significant amount of research has been conducted on nanotube-based field-emitters over the past two decades, and they have been investigated for devices ranging from flat-panel displays to vacuum tubes and electron microscopes. Other electron emission mechanisms from carbon nanotubes, such as photoemission, secondary emission, and thermionic emission, have also been studied, although to a lesser degree than field-emission. This paper presents an overview of the topic, with emphasis on these less-explored mechanisms, although field-emission is also discussed. We will see that not only is electron emission from nanotubes promising for electronsource applications, but also its study could reveal unusual phenomena and open the door to new devices that are not directly related to electron beams.

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Quantum dot as thermal rectifier

Abstract: We report the observation of thermal rectification in a semiconductor quantum dot, as inferred from the asymmetric line shape of the thermopower oscillations. The asymmetry is observed at high in-plane magnetic fields and caused by the presence of a high orbital momentum state in the dot.

Cited by 221 publications

References 22 publications

Nonlinear Heat Radiation Induces Thermal Rectifier in Asymmetric Holey Composites

Nonlinear Heat Radiation Induces Thermal Rectifier in Asymmetric Holey Composites

A review of thermal rectification observations and models in solid materials

Carbon Nanotube Electron Sources: From Electron Beams to Energy Conversion and Optophononics

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