A digitally configurable measurement platform using audio cards for high-resolution electronic transport studies

D. B. Gopman, D. Bedau, A. D. Kent

    Research output: Contribution to journalArticle

    Abstract

    We report on a software-defined digitally configurable measurement platform for determining electronic transport properties in nanostructures with small readout signals. By using a high-resolution audio analog-to-digital/digital-to- analog converter in a digitally compensated bridge configuration we significantly increase the measurement speed compared to established techniques and simultaneously acquire large and small signal characteristics. We characterize the performance (16 bit resolution, 100 dB dynamic range at 192 kS/s) and demonstrate the application of this measurement platform for studying the transport properties of spin-valve nanopillars, a two-terminal device that exhibits giant magnetoresistance and whose resistance can be switched between two levels by applied magnetic fields and by currents applied by the audio card. The high resolution and fast sampling capability permits rapid acquisition of deep statistics on the switching of a spin-valve nanopillar and reduces the time to acquire the basic properties of the device - a state-diagram showing the magnetic configurations as function of applied current and magnetic field - by orders of magnitude.

    Original languageEnglish (US)
    Article number054701
    JournalReview of Scientific Instruments
    Volume83
    Issue number5
    DOIs
    StatePublished - May 2012

    Fingerprint

    cards
    platforms
    Transport properties
    high resolution
    transport properties
    electronics
    Magnetic fields
    digital to analog converters
    Giant magnetoresistance
    Digital to analog conversion
    configurations
    magnetic fields
    dynamic range
    readout
    Nanostructures
    acquisition
    sampling
    diagrams
    Statistics
    statistics

    ASJC Scopus subject areas

    • Instrumentation

    Cite this

    A digitally configurable measurement platform using audio cards for high-resolution electronic transport studies. / Gopman, D. B.; Bedau, D.; Kent, A. D.

    In: Review of Scientific Instruments, Vol. 83, No. 5, 054701, 05.2012.

    Research output: Contribution to journalArticle

    @article{ded92ee55b9347d0962df7da9e9663e2,
    title = "A digitally configurable measurement platform using audio cards for high-resolution electronic transport studies",
    abstract = "We report on a software-defined digitally configurable measurement platform for determining electronic transport properties in nanostructures with small readout signals. By using a high-resolution audio analog-to-digital/digital-to- analog converter in a digitally compensated bridge configuration we significantly increase the measurement speed compared to established techniques and simultaneously acquire large and small signal characteristics. We characterize the performance (16 bit resolution, 100 dB dynamic range at 192 kS/s) and demonstrate the application of this measurement platform for studying the transport properties of spin-valve nanopillars, a two-terminal device that exhibits giant magnetoresistance and whose resistance can be switched between two levels by applied magnetic fields and by currents applied by the audio card. The high resolution and fast sampling capability permits rapid acquisition of deep statistics on the switching of a spin-valve nanopillar and reduces the time to acquire the basic properties of the device - a state-diagram showing the magnetic configurations as function of applied current and magnetic field - by orders of magnitude.",
    author = "Gopman, {D. B.} and D. Bedau and Kent, {A. D.}",
    year = "2012",
    month = "5",
    doi = "10.1063/1.4709498",
    language = "English (US)",
    volume = "83",
    journal = "Review of Scientific Instruments",
    issn = "0034-6748",
    publisher = "American Institute of Physics Publising LLC",
    number = "5",

    }

    TY - JOUR

    T1 - A digitally configurable measurement platform using audio cards for high-resolution electronic transport studies

    AU - Gopman, D. B.

    AU - Bedau, D.

    AU - Kent, A. D.

    PY - 2012/5

    Y1 - 2012/5

    N2 - We report on a software-defined digitally configurable measurement platform for determining electronic transport properties in nanostructures with small readout signals. By using a high-resolution audio analog-to-digital/digital-to- analog converter in a digitally compensated bridge configuration we significantly increase the measurement speed compared to established techniques and simultaneously acquire large and small signal characteristics. We characterize the performance (16 bit resolution, 100 dB dynamic range at 192 kS/s) and demonstrate the application of this measurement platform for studying the transport properties of spin-valve nanopillars, a two-terminal device that exhibits giant magnetoresistance and whose resistance can be switched between two levels by applied magnetic fields and by currents applied by the audio card. The high resolution and fast sampling capability permits rapid acquisition of deep statistics on the switching of a spin-valve nanopillar and reduces the time to acquire the basic properties of the device - a state-diagram showing the magnetic configurations as function of applied current and magnetic field - by orders of magnitude.

    AB - We report on a software-defined digitally configurable measurement platform for determining electronic transport properties in nanostructures with small readout signals. By using a high-resolution audio analog-to-digital/digital-to- analog converter in a digitally compensated bridge configuration we significantly increase the measurement speed compared to established techniques and simultaneously acquire large and small signal characteristics. We characterize the performance (16 bit resolution, 100 dB dynamic range at 192 kS/s) and demonstrate the application of this measurement platform for studying the transport properties of spin-valve nanopillars, a two-terminal device that exhibits giant magnetoresistance and whose resistance can be switched between two levels by applied magnetic fields and by currents applied by the audio card. The high resolution and fast sampling capability permits rapid acquisition of deep statistics on the switching of a spin-valve nanopillar and reduces the time to acquire the basic properties of the device - a state-diagram showing the magnetic configurations as function of applied current and magnetic field - by orders of magnitude.

    UR - http://www.scopus.com/inward/record.url?scp=84862152780&partnerID=8YFLogxK

    UR - http://www.scopus.com/inward/citedby.url?scp=84862152780&partnerID=8YFLogxK

    U2 - 10.1063/1.4709498

    DO - 10.1063/1.4709498

    M3 - Article

    VL - 83

    JO - Review of Scientific Instruments

    JF - Review of Scientific Instruments

    SN - 0034-6748

    IS - 5

    M1 - 054701

    ER -