自旋转移中的能量和动量守恒
Energy and momentum conservation in spin transfer
摘要：
我们利用自旋极化电子散射的局域量子自旋链的模拟表明，能量和线性动量守恒定律施加强约束的自旋转移引起的磁激发的性质。反过来，电子的轨道和自旋动力学取决于局部自旋的动力学特性。我们的研究结果表明，通过调整磁系统和驱动电子的光谱特性，可以实现自旋转移驱动磁化动力学的精确控制。
英文摘要：
We utilize simulations of spin-polarized electron scattering by a chain of localized quantum spins to show that energy and linear momentum conservation laws impose strong constraints on the properties of magnetic excitations induced by spin transfer. In turn, electron's orbital and spin dynamics depends on the dynamical characteristics of the local spins. Our results suggest the possibility to achieve precise control of spin transfer-driven magnetization dynamics by tailoring the spectral characteristics of the magnetic systems and the driving electrons.
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