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Accession Number
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DE2012-1046381
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Title
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Coexistence of Two- and Three-Dimensional Shubnikow-de Haas Oscillations in AR(+) Irradiated KTaO3.
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Publication Date
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Apr 2012
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Media Count
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5p
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Personal Author
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C. Bell H. Y. Hwang M. Kim S. Harashima T. Yajima Y. Hikita
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Abstract
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We report the electron doping in the surface vicinity of KTaO(sub 3) by inducing oxygen-vacancies via Ar(sup +)-irradiation. The doped electrons have high mobility (> 10(sup 4) cm(sup 2)/Vs) at low temperatures, and exhibit Shubnikov-de Haas oscillations with both two- and three-dimensional components. A disparity of the extracted in-plane effective mass, compared to the bulk values, suggests mixing of the orbital characters. Our observations demonstrate that Ar(sup +)-irradiation serves as a flexible tool to study low dimensional quantum transport in 5d semiconducting oxides.
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Keywords
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Effective mass
Electrons
Irradiation
Mobility
Oscillations
Oxides
Temperature
Three dimensional
Transport
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Source Agency
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Technical Information Center Oak Ridge Tennessee
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NTIS Subject Category
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46 - Physics
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Corporate Author
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Stanford Linear Accelerator Center, CA.
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Document Type
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Technical report
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Title Note
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N/A
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NTIS Issue Number
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1303
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Contract Number
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DE-AC02-76SF00515
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