Acoustic phonon tunneling and heat transport due to evanescent electric fields

Mika Prunnila (Corresponding Author), Johanna Meltaus

    Research output: Contribution to journalArticleScientificpeer-review

    26 Citations (Scopus)

    Abstract

    The authors describe how acoustic phonons can directly tunnel through vacuum and, therefore, transmit energy and conduct heat between bodies that are separated by a vacuum gap. This effect is enabled by introducing a coupling mechanism, such as piezoelectricity, that strongly couples electric field and lattice deformation. The electric field leaks into the vacuum as an evanescent field, which leads to finite solid-vacuum-solid transmission probability. Because of strong resonances in the system, some phonons can go through the vacuum gap with (or close to) unity transmission, which leads to significant thermal conductance and heat flux.
    Original languageEnglish
    JournalPhysical Review Letters
    Volume105
    Issue number12
    DOIs
    Publication statusPublished - 2010
    MoE publication typeA1 Journal article-refereed

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    heat
    vacuum
    acoustics
    electric fields
    phonons
    piezoelectricity
    tunnels
    heat flux
    unity
    energy

    Cite this

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    abstract = "The authors describe how acoustic phonons can directly tunnel through vacuum and, therefore, transmit energy and conduct heat between bodies that are separated by a vacuum gap. This effect is enabled by introducing a coupling mechanism, such as piezoelectricity, that strongly couples electric field and lattice deformation. The electric field leaks into the vacuum as an evanescent field, which leads to finite solid-vacuum-solid transmission probability. Because of strong resonances in the system, some phonons can go through the vacuum gap with (or close to) unity transmission, which leads to significant thermal conductance and heat flux.",
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    journal = "Physical Review Letters",
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    Acoustic phonon tunneling and heat transport due to evanescent electric fields. / Prunnila, Mika (Corresponding Author); Meltaus, Johanna.

    In: Physical Review Letters, Vol. 105, No. 12, 2010.

    Research output: Contribution to journalArticleScientificpeer-review

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    AU - Prunnila, Mika

    AU - Meltaus, Johanna

    PY - 2010

    Y1 - 2010

    N2 - The authors describe how acoustic phonons can directly tunnel through vacuum and, therefore, transmit energy and conduct heat between bodies that are separated by a vacuum gap. This effect is enabled by introducing a coupling mechanism, such as piezoelectricity, that strongly couples electric field and lattice deformation. The electric field leaks into the vacuum as an evanescent field, which leads to finite solid-vacuum-solid transmission probability. Because of strong resonances in the system, some phonons can go through the vacuum gap with (or close to) unity transmission, which leads to significant thermal conductance and heat flux.

    AB - The authors describe how acoustic phonons can directly tunnel through vacuum and, therefore, transmit energy and conduct heat between bodies that are separated by a vacuum gap. This effect is enabled by introducing a coupling mechanism, such as piezoelectricity, that strongly couples electric field and lattice deformation. The electric field leaks into the vacuum as an evanescent field, which leads to finite solid-vacuum-solid transmission probability. Because of strong resonances in the system, some phonons can go through the vacuum gap with (or close to) unity transmission, which leads to significant thermal conductance and heat flux.

    U2 - 10.1103/PhysRevLett.105.125501

    DO - 10.1103/PhysRevLett.105.125501

    M3 - Article

    VL - 105

    JO - Physical Review Letters

    JF - Physical Review Letters

    SN - 0031-9007

    IS - 12

    ER -