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    Non-equilibrium phonon generation and detection in microstructure devices

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    Type
    Article
    Authors
    Hertzberg, J. B.
    Otelaja, O. O.
    Yoshida, N. J.
    Robinson, R. D.
    KAUST Grant Number
    KUS-C1-018-02
    Date
    2011-11-02
    Online Publication Date
    2011-11-02
    Print Publication Date
    2011-10
    Permanent link to this record
    http://hdl.handle.net/10754/598980
    
    Metadata
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    Abstract
    We demonstrate a method to excite locally a controllable, non-thermal distribution of acoustic phonon modes ranging from 0 to ∼200 GHz in a silicon microstructure, by decay of excited quasiparticle states in an attached superconducting tunnel junction (STJ). The phonons transiting the structure ballistically are detected by a second STJ, allowing comparison of direct with indirect transport pathways. This method may be applied to study how different phonon modes contribute to the thermal conductivity of nanostructures. © 2011 American Institute of Physics.
    Citation
    Hertzberg JB, Otelaja OO, Yoshida NJ, Robinson RD (2011) Non-equilibrium phonon generation and detection in microstructure devices. Review of Scientific Instruments 82: 104905. Available: http://dx.doi.org/10.1063/1.3652979.
    Sponsors
    The authors thank R. B. Van Dover, J. Blakely, S. Baker, K. Schwab, and Cornell LASSP for loan of key equipment, and L. Spietz for photolithography recipes. We thank R. B. Van Dover, K. Schwab, E. Smith, J. Parpia, D. Ralph, B. Plourde, M. Blencowe, D. Westly, R. Pohl, P. Berberich, and C. Mellor for helpful discussions and thank D. Toledo, J. Chang and A. Lin for help with apparatus. The authors acknowledge funding from the National Science Foundation (NSF) (DMR 0520404) and Department of Energy (DOE) (DE-SC0001086). This publication is based on work supported in part by Award No. KUS-C1-018-02, made by King Abdullah University of Science and Technology (KAUST). This work was performed in part at the Cornell NanoScale Facility, a member of the National Nanotechnology Infrastructure Network, which is supported by the National Science Foundation (Grant ECS-0335765).
    Publisher
    AIP Publishing
    Journal
    Review of Scientific Instruments
    DOI
    10.1063/1.3652979
    PubMed ID
    22047321
    ae974a485f413a2113503eed53cd6c53
    10.1063/1.3652979
    Scopus Count
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