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Heat conduction measurements in ballistic 1D phonon waveguides indicate breakdown of the thermal conductance quantization

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Heat conduction measurements in ballistic 1D phonon waveguides indicate breakdown of the thermal conductance quantization. / Tavakoli, Adib; Lulla , Kunal; Crozes, Thierry et al.
In: Nature Communications, Vol. 9, 4287, 16.10.2018.

Research output: Contribution to Journal/Magazine › Journal article › peer-review

Harvard

Tavakoli, A, Lulla , K, Crozes, T, Mingo, N, Collin, E & Bourgeois, O 2018, 'Heat conduction measurements in ballistic 1D phonon waveguides indicate breakdown of the thermal conductance quantization', Nature Communications, vol. 9, 4287. https://doi.org/10.1038/s41467-018-06791-0

APA

Tavakoli, A., Lulla , K., Crozes, T., Mingo, N., Collin, E., & Bourgeois, O. (2018). Heat conduction measurements in ballistic 1D phonon waveguides indicate breakdown of the thermal conductance quantization. Nature Communications, 9, Article 4287. https://doi.org/10.1038/s41467-018-06791-0

Vancouver

Tavakoli A, Lulla K, Crozes T, Mingo N, Collin E, Bourgeois O. Heat conduction measurements in ballistic 1D phonon waveguides indicate breakdown of the thermal conductance quantization. Nature Communications. 2018 Oct 16;9:4287. doi: 10.1038/s41467-018-06791-0

Author

Tavakoli, Adib ; Lulla , Kunal ; Crozes, Thierry et al. / Heat conduction measurements in ballistic 1D phonon waveguides indicate breakdown of the thermal conductance quantization. In: Nature Communications. 2018 ; Vol. 9.

Bibtex

@article{cbcb51d486c4486b9f2c083a3948aee5,
title = "Heat conduction measurements in ballistic 1D phonon waveguides indicate breakdown of the thermal conductance quantization",
abstract = "Emerging quantum technologies require mastering thermal management, especially at the nanoscale. It is now accepted that thermal metamaterial-based phonon manipulation is possible, especially at sub-kelvin temperatures. In these extreme limits of low temperatures and dimensions, heat conduction enters a quantum regime where phonon exchange obeys the Landauer formalism. Phonon transport is then governed by the transmission coefficients between the ballistic conductor and the thermal reservoirs. Here we report on ultra-sensitive thermal experiments made on ballistic 1D phonon conductors using a micro-platform suspended sensor. Our thermal conductance measurements attain a power sensitivity of 15 attoWatts Hz−−−√−1 around 100 mK. Ballistic thermal transport is dominated by non-ideal transmission coefficients and not by the quantized thermal conductance of the nanowire itself. This limitation of heat transport in the quantum regime may have a significant impact on modern thermal management and thermal circuit design.",
author = "Adib Tavakoli and Kunal Lulla and Thierry Crozes and Natalio Mingo and Eddy Collin and Olivier Bourgeois",
year = "2018",
month = oct,
day = "16",
doi = "10.1038/s41467-018-06791-0",
language = "English",
volume = "9",
journal = "Nature Communications",
issn = "2041-1723",
publisher = "Nature Publishing Group",

}

RIS

TY - JOUR

T1 - Heat conduction measurements in ballistic 1D phonon waveguides indicate breakdown of the thermal conductance quantization

AU - Tavakoli, Adib

AU - Lulla , Kunal

AU - Crozes, Thierry

AU - Mingo, Natalio

AU - Collin, Eddy

AU - Bourgeois, Olivier

PY - 2018/10/16

Y1 - 2018/10/16

N2 - Emerging quantum technologies require mastering thermal management, especially at the nanoscale. It is now accepted that thermal metamaterial-based phonon manipulation is possible, especially at sub-kelvin temperatures. In these extreme limits of low temperatures and dimensions, heat conduction enters a quantum regime where phonon exchange obeys the Landauer formalism. Phonon transport is then governed by the transmission coefficients between the ballistic conductor and the thermal reservoirs. Here we report on ultra-sensitive thermal experiments made on ballistic 1D phonon conductors using a micro-platform suspended sensor. Our thermal conductance measurements attain a power sensitivity of 15 attoWatts Hz−−−√−1 around 100 mK. Ballistic thermal transport is dominated by non-ideal transmission coefficients and not by the quantized thermal conductance of the nanowire itself. This limitation of heat transport in the quantum regime may have a significant impact on modern thermal management and thermal circuit design.

AB - Emerging quantum technologies require mastering thermal management, especially at the nanoscale. It is now accepted that thermal metamaterial-based phonon manipulation is possible, especially at sub-kelvin temperatures. In these extreme limits of low temperatures and dimensions, heat conduction enters a quantum regime where phonon exchange obeys the Landauer formalism. Phonon transport is then governed by the transmission coefficients between the ballistic conductor and the thermal reservoirs. Here we report on ultra-sensitive thermal experiments made on ballistic 1D phonon conductors using a micro-platform suspended sensor. Our thermal conductance measurements attain a power sensitivity of 15 attoWatts Hz−−−√−1 around 100 mK. Ballistic thermal transport is dominated by non-ideal transmission coefficients and not by the quantized thermal conductance of the nanowire itself. This limitation of heat transport in the quantum regime may have a significant impact on modern thermal management and thermal circuit design.

U2 - 10.1038/s41467-018-06791-0

DO - 10.1038/s41467-018-06791-0

M3 - Journal article

VL - 9

JO - Nature Communications

JF - Nature Communications

SN - 2041-1723

M1 - 4287

ER -