Inverse tunnel magnetoresistance associated with Coulomb staircases in micro-fabricated granular systems

K. Yamane, K. Yakushiji, F. Ernult, M. Matsuura, S. Mitani, K. Takanashi, H. Fujimori

研究成果: Article査読

2 被引用数 (Scopus)

抄録

We have investigated spin-dependent single-electron tunneling (SET) in micro-fabricated magnetic granular systems with current-perpendicular-to-plane geometry. Electron beam lithography technique and Ar ion etching were employed for the micro-fabrication process to form a Co/Al-O/Co31Al 24O45/Co/Pt pillar with the cross section of 0.4 × 0.4 μm2. Inverse tunnel magnetoresistance is observed around the step-up points of Coulomb staircases. The observed results are beyond the orthodox theory of SET for a double junction model without spin-accumulation effects.

本文言語English
ページ(範囲)e1091-e1093
ジャーナルJournal of Magnetism and Magnetic Materials
272-276
SUPPL. 1
DOI
出版ステータスPublished - 2004 5月

ASJC Scopus subject areas

  • 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

「Inverse tunnel magnetoresistance associated with Coulomb staircases in micro-fabricated granular systems」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