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翻訳と辞書　辞書検索 [ 開発暫定版 ] スポンサード リンク Spin pumping ： ウィキペディア英語版 Spin pumping Spin pumping is a method of generating a spin current, the spintronic analog of a battery in conventional electronics. In order to make a spintronic device, the primary requirement is to have a system that can generate a current of spin-polarized electrons, as well as a system that is sensitive to the spin polarization. Most spintronic devices also have a unit in between these two that changes the current of electrons depending on the spin states. Candidates for such devices include injection schemes based on magnetic semiconductors and ferromagnetic metals, ferromagnetic resonance devices〔 〕 , and a variety of spin-dependent pumps. Optical, microwave and electrical methods are also being explored〔 〕 .These devices could be used for low-power data transmission in spintronic devices〔 〕 or to transmit electrical signals through insulators.〔 〕 The spin pumped into an adjacent layer by a precessing magnetic moment is given by〔 :$\backslash vec\; j\_s\; =\; \backslash langle\; \backslash vec\; M(t)\; \backslash times\; \backslash rangle$ where $\backslash vec\; j\_s$ is the spin current (the vector indicates the orientation of the spin, ''not'' the direction of the current), $g^$ is the spin-mixing conductance, $M\_S$ is the saturation magnetization, and $\backslash vec\; M(t)$ is the time-dependent orientation of the moment. ==References== 抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』 ■ウィキペディアで「Spin pumping」の詳細全文を読む スポンサード リンク 翻訳と辞書 : 翻訳のためのインターネットリソース Copyright(C) kotoba.ne.jp 1997-2016. All Rights Reserved.