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Primary thermometry triad at 6 mK in mesoscopic circuits

Author

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  • Z. Iftikhar

    (Centre de Nanosciences et de Nanotechnologies, CNRS, Univ Paris Sud-Université Paris-Saclay, Université Paris Diderot-Sorbonne Paris Cité)

  • A. Anthore

    (Centre de Nanosciences et de Nanotechnologies, CNRS, Univ Paris Sud-Université Paris-Saclay, Université Paris Diderot-Sorbonne Paris Cité)

  • S. Jezouin

    (Centre de Nanosciences et de Nanotechnologies, CNRS, Univ Paris Sud-Université Paris-Saclay, Université Paris Diderot-Sorbonne Paris Cité)

  • F. D. Parmentier

    (Centre de Nanosciences et de Nanotechnologies, CNRS, Univ Paris Sud-Université Paris-Saclay, Université Paris Diderot-Sorbonne Paris Cité)

  • Y. Jin

    (Centre de Nanosciences et de Nanotechnologies, CNRS, Univ Paris Sud-Université Paris-Saclay, Université Paris Diderot-Sorbonne Paris Cité)

  • A. Cavanna

    (Centre de Nanosciences et de Nanotechnologies, CNRS, Univ Paris Sud-Université Paris-Saclay, Université Paris Diderot-Sorbonne Paris Cité)

  • A. Ouerghi

    (Centre de Nanosciences et de Nanotechnologies, CNRS, Univ Paris Sud-Université Paris-Saclay, Université Paris Diderot-Sorbonne Paris Cité)

  • U. Gennser

    (Centre de Nanosciences et de Nanotechnologies, CNRS, Univ Paris Sud-Université Paris-Saclay, Université Paris Diderot-Sorbonne Paris Cité)

  • F. Pierre

    (Centre de Nanosciences et de Nanotechnologies, CNRS, Univ Paris Sud-Université Paris-Saclay, Université Paris Diderot-Sorbonne Paris Cité)

Abstract

Quantum physics emerge and develop as temperature is reduced. Although mesoscopic electrical circuits constitute an outstanding platform to explore quantum behaviour, the challenge in cooling the electrons impedes their potential. The strong coupling of such micrometre-scale devices with the measurement lines, combined with the weak coupling to the substrate, makes them extremely difficult to thermalize below 10 mK and imposes in situ thermometers. Here we demonstrate electronic quantum transport at 6 mK in micrometre-scale mesoscopic circuits. The thermometry methods are established by the comparison of three in situ primary thermometers, each involving a different underlying physics. The employed combination of quantum shot noise, quantum back action of a resistive circuit and conductance oscillations of a single-electron transistor covers a remarkably broad spectrum of mesoscopic phenomena. The experiment, performed in vacuum using a standard cryogen-free dilution refrigerator, paves the way towards the sub-millikelvin range with additional thermalization and refrigeration techniques.

Suggested Citation

  • Z. Iftikhar & A. Anthore & S. Jezouin & F. D. Parmentier & Y. Jin & A. Cavanna & A. Ouerghi & U. Gennser & F. Pierre, 2016. "Primary thermometry triad at 6 mK in mesoscopic circuits," Nature Communications, Nature, vol. 7(1), pages 1-7, December.
    • Handle: RePEc:nat:natcom:v:7:y:2016:i:1:d:10.1038_ncomms12908
    DOI: 10.1038/ncomms12908
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    Cited by:

    1. Lev V. Levitin & Harriet van der Vliet & Terje Theisen & Stefanos Dimitriadis & Marijn Lucas & Antonio D. Corcoles & Ján Nyéki & Andrew J. Casey & Graham Creeth & Ian Farrer & David A. Ritchie & James, 2022. "Cooling low-dimensional electron systems into the microkelvin regime," Nature Communications, Nature, vol. 13(1), pages 1-8, December.
    2. P. Glidic & O. Maillet & C. Piquard & A. Aassime & A. Cavanna & Y. Jin & U. Gennser & A. Anthore & F. Pierre, 2023. "Quasiparticle Andreev scattering in the ν = 1/3 fractional quantum Hall regime," Nature Communications, Nature, vol. 14(1), pages 1-11, December.
    3. C. Piquard & P. Glidic & C. Han & A. Aassime & A. Cavanna & U. Gennser & Y. Meir & E. Sela & A. Anthore & F. Pierre, 2023. "Observing the universal screening of a Kondo impurity," Nature Communications, Nature, vol. 14(1), pages 1-11, December.

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