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Magnetoelectric effect in ferromagnetic-ferroelectric tunneling junctions

Published online by Cambridge University Press:  18 August 2011

L.B. Zhang ,
M.H. Tang ,
J.C. Li ,
Y.G. Xiao ,
Z.Q. Zeng ,
Z.P. Wang ,
G.Y. Wang ,
S.B. Yang ,
X.L. Xu  and
B. Jiang
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L.B. Zhang
Affiliation:
Key Laboratory of Low Dimensional Materials and Application Technology, Ministry of Education, Xiangtan University, Xiangtan, Hunan 411105, P.R. China
M.H. Tang*
Affiliation:
Key Laboratory of Low Dimensional Materials and Application Technology, Ministry of Education, Xiangtan University, Xiangtan, Hunan 411105, P.R. China
J.C. Li
Affiliation:
ASIC R&D Center, School of Electronic Science and Engineering of National University of Defense Technology, Changsha, Hunan 410073, P.R. China
Y.G. Xiao
Affiliation:
Key Laboratory of Low Dimensional Materials and Application Technology, Ministry of Education, Xiangtan University, Xiangtan, Hunan 411105, P.R. China
Z.Q. Zeng
Affiliation:
Key Laboratory of Low Dimensional Materials and Application Technology, Ministry of Education, Xiangtan University, Xiangtan, Hunan 411105, P.R. China
Z.P. Wang
Affiliation:
Key Laboratory of Low Dimensional Materials and Application Technology, Ministry of Education, Xiangtan University, Xiangtan, Hunan 411105, P.R. China
G.Y. Wang
Affiliation:
Key Laboratory of Low Dimensional Materials and Application Technology, Ministry of Education, Xiangtan University, Xiangtan, Hunan 411105, P.R. China
S.B. Yang
Affiliation:
Key Laboratory of Low Dimensional Materials and Application Technology, Ministry of Education, Xiangtan University, Xiangtan, Hunan 411105, P.R. China
X.L. Xu
Affiliation:
Key Laboratory of Low Dimensional Materials and Application Technology, Ministry of Education, Xiangtan University, Xiangtan, Hunan 411105, P.R. China
B. Jiang
Affiliation:
Key Laboratory of Low Dimensional Materials and Application Technology, Ministry of Education, Xiangtan University, Xiangtan, Hunan 411105, P.R. China
J. He
Affiliation:
Pacific Geoscience Centre, Geological Survey of Canada, 9860 West Saanich Road, Sidney, British Columbia, Canada V8L 4B2
*
ae-mail: mhtang@xtu.edu.cn
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Abstract

The interfacial magnetoelectric (ME) effect in ferromagnetic-ferroelectric (FM-FE) tunneling junctions was investigated in this work. We found that the tunneling magnetoresistance (TMR) changes with the reversing of the electric polarization of the FE barrier. The theoretical results also indicated that TMR is strongly dependent on the electric polarization, the exchange splitting energy, the screening lengths in the electrodes, and the dielectric constant of the FE barrier layer. These results may provide some insights into switching magnetization electrically for spintronics and presenting independent tunneling states in a single junction for multi-value storage memory applications.

Type
Research Article
Information
The European Physical Journal - Applied Physics , Volume 55 , Issue 3 , September 2011 , 30601
Copyright
© EDP Sciences, 2011

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