Tunneling spectroscopy of magnetic tunnel junctions: Comparison between CoFeB/MgO/CoFeB and CoFeB/Al-O/CoFeB

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

Research output: Contribution to journalArticlepeer-review

8 Citations (Scopus)

Abstract

Tunneling spectroscopy measurements of magnetic tunneling junctions including two different barrier layers were performed. Intense dips at bias voltages of ±0.3 V were observed in second derivative conductance spectra only for a magnetic tunneling junction with a MgO barrier. It was concluded that the electronic structure of the MgO barrier has significant influence on the tunneling process of electrons through magnetic tunnel junctions.

Original languageEnglish
Article number08T309
JournalJournal of Applied Physics
Volume99
Issue number8
DOIs
Publication statusPublished - 2006 May 25
Externally publishedYes

ASJC Scopus subject areas

  • Physics and Astronomy(all)

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