Spin dependent tunneling in granular systems: effects of Coulomb blockade

S. Mitani, K. Takanashi, J. Chiba, K. Yakushiji, H. Fujimori

Research output: Contribution to journalConference articlepeer-review


A study was conducted to investigate tunneling magnetoresistance (TMR) and related properties in insulating granular systems, which consist of nanometer-sized magnetic metal particles and insulating matrix. Remarkable enhancement of MR was observed for Co-Al-O granular films at low temperatures. Furthermore, staircase structures appeared in the current-voltage (I-V) characteristics for a few Co particles at the film surface by means of scanning tunneling microscopy (STM) measurements.

Original languageEnglish
Pages (from-to)EC-03
JournalDigests of the Intermag Conference
Publication statusPublished - 1999
EventProceedings of the 1999 IEEE International Magnetics Conference 'Digest of Intermag 99' - Kyongju, South Korea
Duration: 1999 May 181999 May 21

ASJC Scopus subject areas

  • Electrical and Electronic Engineering


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