Accession Number DE2012-1046381
Title Coexistence of Two- and Three-Dimensional Shubnikow-de Haas Oscillations in AR(+) Irradiated KTaO3.
Publication Date Apr 2012
Media Count 5p
Personal Author C. Bell H. Y. Hwang M. Kim S. Harashima T. Yajima Y. Hikita
Abstract 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.
Keywords Effective mass
Electrons
Irradiation
Mobility
Oscillations
Oxides
Temperature
Three dimensional
Transport

 
Source Agency Technical Information Center Oak Ridge Tennessee
NTIS Subject Category 46 - Physics
Corporate Author Stanford Linear Accelerator Center, CA.
Document Type Technical report
Title Note N/A
NTIS Issue Number 1303
Contract Number DE-AC02-76SF00515

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