Pressure enhanced tunnel magnetoresistance in Co-Al-O granular films

S. Kaji, G. Oomi, S. Mitani, S. Takahashi, K. Takanashi, S. Maekawa

研究成果: Article査読

8 被引用数 (Scopus)

抄録

Effects of high pressure on tunnel transport and magnetoresistance have been investigated in Co52Al20O28 insulating granular films. It is found that the temperature dependence of electrical resistivity ρ(T) is affected strongly by applying pressure while the T−1/2 dependence in ρ(T) is still observed at high pressures. Furthermore, tunnel magnetoresistance is enhanced by more than 2% at 3.1 GPa. The results are discussed briefly on the basis of higher-order tunneling theory.

本文言語English
ジャーナルPhysical Review B - Condensed Matter and Materials Physics
68
5
DOI
出版ステータスPublished - 2003 8 5

ASJC Scopus subject areas

  • 電子材料、光学材料、および磁性材料
  • 凝縮系物理学

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