Large Emission Power over 2 μW with High Q Factor Obtained from Nanocontact Magnetic-Tunnel-Junction-Based Spin Torque Oscillator
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概要
- 論文の詳細を見る
We have developed a new type of nanocontact structure called a ``sombrero-shaped'' nano-contact for a spin torque oscillator (STO) based on magnetic tunnel junctions. This structure reduces the shunt current, which passes through the capping layer, and hence improves the magnetoresistance (MR) ratio to 46% compared with an MR ratio of 3% in conventional nano-contact structures. It also displays highly stable oscillation (Q=350) with high emission power over 2 μW. This is significant in the development of new spintronic devices such as nanosized microwave generators and highly sensitive nanoscale magnetic field sensors.
- 2013-11-25
著者
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Yuasa Shinji
National Inst. Advanced Industrial Sci. And Technol.(aist) Ibaraki Jpn
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Fukushima Akio
National Institute Of Advanced Industrial Science And Technology
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Suzuki Yoshishige
Graduate School Of Engineering Science Osaka University
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Kubota Hitoshi
National Inst. Advanced Industrial Sci. And Technol. (aist) Tsukuba Jpn
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Maehara Hiroki
Process Development Center Canon Anelva Corporation
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Nishimura Kazumasa
Process Development Center Canon Anelva Corporation
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Tsunekawa Koji
Process Development Center Canon Anelva Corporation
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Nagamine Yoshinori
Process Development Center Canon Anelva Corporation
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Ando Koji
National Institute Of Advanced Industrial Science And Technology (aist) Spintronics Research Center
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Suzuki Yoshishige
Graduate School of Engineering Science, Osaka University, Toyonaka, Osaka 560-8531, Japan
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Seki Takayuki
National Institute of Advanced Industrial Science and Technology (AIST), Spintronics Research Center, Tsukuba, Ibaraki 305-8568, Japan
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Deac Alina
National Institute of Advanced Industrial Science and Technology (AIST), Spintronics Research Center, Tsukuba, Ibaraki 305-8568, Japan
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