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arXiv 0912.3789cond-mat.other
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利用自旋转移矩实现磁畴壁抽运

Magnetic Domain Wall Pumping by Spin Transfer Torque

Carl T. Boone, Ilya N. Krivorotov

摘要:

我们表明,自旋转移扭矩从直接施加平行于磁畴壁(DW)的自旋极化电流诱导DW运动的方向独立的电流极性。DW对自旋扭矩的这种单向响应使DW泵送成为可能:由交流电驱动的长范围DW位移。我们的数值模拟表明,DW泵浦可以通过由电流的DW的内部自由度的激发共振放大。

英文摘要:

We show that spin transfer torque from direct spin-polarized current applied parallel to a magnetic domain wall (DW) induces DW motion in a direction independent of the current polarity. This unidirectional response of the DW to spin torque enables DW pumping: long-range DW displacement driven by alternating current. Our numerical simulations reveal that DW pumping can be resonantly amplified through excitation of internal degrees of freedom of the DW by the current.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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