Coexistence of two-dimensional and three-dimensional Shubnikov-de Haas oscillations in Ar+-irradiated KTaO3

S. Harashima, C. Bell, M. Kim, T. Yajima, Y. Hikita, H. Y. Hwang

研究成果: ジャーナルへの寄稿学術誌査読

36 被引用数 (Scopus)

抄録

We report electron doping in the surface vicinity of KTaO3 by inducing oxygen vacancies via Ar+ irradiation. The doped electrons have high mobility (>104 cm2/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+ irradiation serves as a flexible tool to study low-dimensional quantum transport in 5d semiconducting oxides.

本文言語英語
論文番号085102
ジャーナルPhysical Review B - Condensed Matter and Materials Physics
88
8
DOI
出版ステータス出版済み - 8月 2 2013
外部発表はい

!!!All Science Journal Classification (ASJC) codes

  • 電子材料、光学材料、および磁性材料
  • 凝縮系物理学

フィンガープリント

「Coexistence of two-dimensional and three-dimensional Shubnikov-de Haas oscillations in Ar+-irradiated KTaO3」の研究トピックを掘り下げます。これらがまとまってユニークなフィンガープリントを構成します。

引用スタイル