Voltage generation by ferromagnetic resonance at a nonmagnet to ferromagnet contact.
Voltage generation by ferromagnetic resonance at a nonmagnet to ferromagnet contact.
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DOI：
10.1103/physrevlett.97.216602
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发表时间：
2006-08
影响因子：
8.6
通讯作者：
Xuhui Wang;G. Bauer;B. V. van Wees;A. Brataas;Y. Tserkovnyak
中科院分区：
文献类型：
--
作者：
Xuhui Wang;G. Bauer;B. V. van Wees;A. Brataas;Y. Tserkovnyak
铁磁体可以共振吸收射频辐射，以维持内部或外加磁场周围磁化的稳定进动。我们表明，在这些铁磁共振条件下，在与具有自旋翻转散射的铁磁体的普通金属电接触处会产生直流电压。非磁性区域中的自旋动力学由界面电导的频率相关重整化来解释。这种机制允许通过已建立的直流电子技术来感测随时间变化的磁化强度。
A ferromagnet can resonantly absorb rf radiation to sustain a steady precession of the magnetization around an internal or applied magnetic field. We show that, under these ferromagnetic resonance conditions, a dc voltage is generated at a normal-metal electric contact to a ferromagnet with spin-flip scattering. The spin dynamics in the nonmagnetic region is accounted for by a frequency-dependent renormalization of the interface conductances. This mechanism allows sensing of time-dependent magnetizations by established dc electronic techniques.