Differential conductance measurements of low-resistance CoFeB/MgO/CoFeB magnetic tunnel junctions

S. Nishioka, Y. V. Hamada, R. Matsumoto, M. Mizuguchi, M. Shiraishi, A. Fukushima, H. Kubota, T. Nagahama, S. Yuasa, H. Maehara, Y. Nagamine, K. Tsunekawa, D. D. Djayaprawira, N. Watanabe, Y. Suzuki

研究成果: Article査読

8 被引用数 (Scopus)

抄録

We measured differential conductance spectra of magnetic tunnel junctions (MTJs) with thin MgO barrier and low-resistance area product. The spectra of MTJs with MgO barrier thicker than 1.05 nm were essentially the same except for slight decrease of contributions from low-energy excitations, such as magnons. The spectra of MTJ with 1.01 nm MgO barrier were thoroughly different from the MTJs with thicker barrier. The result reveals that an MTJ with very thin MgO barrier thickness has different conduction characteristics from those with thicker MgO barriers.

本文言語English
ページ(範囲)e649-e651
ジャーナルJournal of Magnetism and Magnetic Materials
310
2 SUPPL. PART 3
DOI
出版ステータスPublished - 2007 3
外部発表はい

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics

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