Spin-dependent single-electron-tunneling effects in epitaxial Fe nanoparticles

F. Ernult*, K. Yamane, S. Mitani, K. Yakushiji, K. Takanashi, Y. K. Takahashi, K. Hono

*この研究の対応する著者

研究成果: Article査読

35 被引用数 (Scopus)

抄録

The preparation of Fe/MgO/Fe nanoparticles/MgO/Co double tunnel junctions by molecular beam epitaxy, for current-perpendicular-to-plane transport measurements on submicrometer-sized pillars, was discussed. The microstructural observations indicates that the samples exhibit a fully epitaxial layered structure with sharp and flat interfaces including separated Fe nanoparticles between the barriers. It was shown that the introduction of asymmetric MgO tunnel barrier, with different thickness, in the double junction leads to a clear observation of Coulomb staircase and associated tunnel magnetoresistance oscillations. Estimation of the capacitance of the system indicates that these transport phenomena were due to charging effects of the magnetic particles.

本文言語English
ページ(範囲)3106-3108
ページ数3
ジャーナルApplied Physics Letters
84
16
DOI
出版ステータスPublished - 2004 4 19
外部発表はい

ASJC Scopus subject areas

  • 物理学および天文学(その他)

フィンガープリント

「Spin-dependent single-electron-tunneling effects in epitaxial Fe nanoparticles」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