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    Laser energy tuning of carrier effective mass and thermopower in epitaxial oxide thin films

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    Type
    Article
    Authors
    Abutaha, Anas I. cc
    Sarath Kumar, S. R.
    Alshareef, Husam N. cc
    KAUST Department
    Functional Nanomaterials and Devices Research Group
    Material Science and Engineering Program
    Physical Science and Engineering (PSE) Division
    Date
    2012-04-18
    Online Publication Date
    2012-04-18
    Print Publication Date
    2012-04-16
    Permanent link to this record
    http://hdl.handle.net/10754/552879
    
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    Abstract
    The effect of the laser fluence on high temperature thermoelectric properties of the La doped SrTiO3 (SLTO) thin films epitaxially grown on LaAlO3 〈100〉 substrates by pulsed laser deposition is clarified. It is shown that oxygen vacancies that influence the effective mass of carriers in SLTO films can be tuned by varying the laser energy. The highest power factor of 0.433 W K−1 m−1 has been achieved at 636 K for a filmdeposited using the highest laser fluence of 7 J cm−2 pulse−1.
    Citation
    Laser energy tuning of carrier effective mass and thermopower in epitaxial oxide thin films 2012, 100 (16):162106 Applied Physics Letters
    Publisher
    AIP Publishing
    Journal
    Applied Physics Letters
    DOI
    10.1063/1.4704183
    Additional Links
    http://scitation.aip.org/content/aip/journal/apl/100/16/10.1063/1.4704183
    ae974a485f413a2113503eed53cd6c53
    10.1063/1.4704183
    Scopus Count
    Collections
    Articles; Physical Science and Engineering (PSE) Division; Material Science and Engineering Program

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