Magnetoresistance oscillations in magnetic tunnel junction

  • P. D. Kim
  • , J. Zidanic
  • , N. V. Volkov
  • , G. S. Patrin
  • , Y. Y. Song
  • , S. C. Yu
  • , C. G. Kim
  • , J. H. Yun

Research output: Contribution to journalArticlepeer-review

Abstract

We report unconventional oscillatory tunnel magnetoresistance as a function of applied bias in the magnetic tunnel junction with the Al2O3 barrier. We attribute this feature to the inhomogeneity of the potential barrier structure. Ferromagnetic grains inside the potential barrier are formed at the technological stage. In this case, the TMR oscillation occurs due to the discrete charging effect that is well known as the Coulomb blockade.

Original languageEnglish
Pages (from-to)236-239
Number of pages4
JournalJournal of Magnetism and Magnetic Materials
Volume316
Issue number2 SPEC. ISS.
DOIs
StatePublished - Sep 2007

Bibliographical note

Funding Information:
This work was supported by the Korean Science and Engineering Foundation (KOSEF), Grant no. R01-2004-000-10882-0. N.V. Volkov thanks the Russian Science Support Foundation for support.

Keywords

  • Magnetic tunnel junction
  • Magnetoresistance osciilation
  • TMR

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