Penetration of a Magnetic Wall into Thin Ferromagnetic Electrodes of a Nano-Contact Spin Valve
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概要
- 論文の詳細を見る
We theoretically analyze a magnetic wall confined in a nano-contact spin valve paying special attention to the penetration of the magnetic wall into thin ferromagnetic electrodes. We show that, compared with the Bloch wall, the penetration of the Néel wall is suppressed by increases of the demagnetization energy. We find the optimal conditions of the radius and height of the nano-contact to maximize the power of the current-induced oscillation of the magnetic wall. We also find that the thermal stability of the Bloch wall increases when the nano-contact's radius increases or height decreases.
- 2013-07-15
著者
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Sasaki Munetaka
Department Of Applied Physics Tohoku University
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Tanaka Susumu
Department Of Cardiology The Second Tokyo National Hospital
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Sato Jun
Department Of Anesthesia Gunma Cancer Center
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Imamura Hiroshi
Spintronics Research Center Aist
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Matsushita Katsuyoshi
Cybermedia Center (CMC), Osaka University, Ibaraki, Osaka 567-0047, Japan
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Imamura Hiroshi
Spintronics Research Center, AIST, Tsukuba, Ibaraki 305-8568, Japan
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Sato Jun
Department of Physics, Ochanomizu University, Bunkyo, Tokyo 112-8610, Japan
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Norizuki Yousuke
Department of Applied Physics, Tohoku University, Sendai 980-8579, Japan
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Tanaka Susumu
Department of Applied Physics, Tohoku University, Sendai 980-8579, Japan
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