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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 Electric dipole spin resonance ： ウィキペディア英語版 Electric dipole spin resonance In quantum mechanics, electron possesses electric charge $e$ and magnetic moment $\backslash boldsymbol$ whose absolute value equals to the Bohr magneton $\backslash mu\_B$. Contemporary computational techniques employ electron charge in transistors to process information and electron spin in magnetic storage devices to accumulate it. The emergent field of spintronics aims in unifying operations of these subsystems. For achieving this goal, electron spin should be operated by electric fields, and electric dipole spin resonance (EDSR) is one of the most efficient tools for achieving this goal. It allows performing spin flip transitions by resonant $ac$ electric fields. ==Theory== Electron spin resonance, also known as electron paramagnetic resonance, is due to the coupling of electron magnetic moment $\backslash boldsymbol$ to the external magnetic field $\backslash boldsymbol$ through the Hamiltonian $H=-(\backslash boldsymbol\backslash cdot\backslash boldsymbol)$ describing its Larmor precession. Magnetic moment $\backslash boldsymbol$ is related to electron angular momentum $\backslash boldsymbol$ as $\backslash boldsymbol=g\backslash boldsymbol$, where $g$ is a Landé ''g''-factor. For a free electron in vacuum $g\backslash approx2$. Larmor interaction quantizes electron spin energy levels in a ''dc'' magnetic field $B$ as $E\_\backslash pm=\backslash pm\backslash fracg\backslash mu\_BB$, and a resonant ''ac'' magnetic field $\backslash tilde\{\backslash boldsymbol\{B\}\}(t)$ of a frequency $\backslash omega\_S=g\backslash mu\_BB/\backslash hbar$ results in electron paramagnetic resonance. 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「Electric dipole spin resonance」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.