Spin-Polarized Transport Phenomena in Double Magnetic Tunnel Junctions Caused by Ferromagnetic CoFe Nanoparticles

Yoon, Kapsoo; Kim, Kiwoong; Koo, Jahyun; Yang, Jungyup; Do, YoungHo; Kwak, Junesik; Hong, Jinpyo

doi:10.1109/TMAG.2009.2027995

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Spin-Polarized Transport Phenomena in Double Magnetic Tunnel Junctions Caused by Ferromagnetic CoFe Nanoparticles

Yoon, Kapsoo;
Kim, Kiwoong;
Koo, Jahyun;
Yang, Jungyup;
Do, YoungHo;
... Hong, Jinpyo;
외 1명

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초록

We present some unusual spin-polarized transport phenomena in asymmetric double barrier magnetic tunneling junctions (ADBMTJs) with CoFe/AlOx/ferromagnetic nanoparticle (FM-NPs)/AlOx/Ta structures. The conductance curves and the magnetoresistance ratio clearly oscillate with applied bias voltage, indicating the presence of Coulomb blockade effects due to isolated ferromagnetic nanoparticles in the parallel configuration in the ADBMTJ. The oscillation period is about 1.5 mV at 2 K.

키워드

Double magnetic tunnel junctions; magnetic devices; MAGNETORESISTANCE; ACCUMULATION; FILMS

제목: Spin-Polarized Transport Phenomena in Double Magnetic Tunnel Junctions Caused by Ferromagnetic CoFe Nanoparticles

저자: Yoon, Kapsoo; Kim, Kiwoong; Koo, Jahyun; Yang, Jungyup; Do, YoungHo; Kwak, Junesik; Hong, Jinpyo

DOI: 10.1109/TMAG.2009.2027995

발행일: 2010-01

유형: Article

저널명: IEEE Transactions on Magnetics

권: 46

호: 1

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