论文标题

Dephasing辅助Macrospin运输

Dephasing-assisted macrospin transport

论文作者

Iubini, S., Borlenghi, S., Delin, A., Lepri, S., Piazza, F.

论文摘要

运输现象在物理学中无处不在,通常可以理解,环境障碍和噪声会恶化激发的转移。但是,在某些情况下,可以通过波动来增强运输。在目前的工作中,我们通过微磁模拟表明,在一系列古典宏生中的运输效率可以大大提高,以最佳的降低噪声水平。我们在简化模型中也证明了相同的效果,即受相位噪声的耗散离散的非线性schrödinger方程。我们的结果表明,实现了大型的镁质和旋转器设备,该设备可用于提高自旋依赖性运输效率。

Transport phenomena are ubiquitous in physics, and it is generally understood that the environmental disorder and noise deteriorates the transfer of excitations. There are however cases in which transport can be enhanced by fluctuations. In the present work we show, by means of micromagnetics simulations, that transport efficiency in a chain of classical macrospins can be greatly increased by an optimal level of dephasing noise. We demonstrate also the same effect in a simplified model, the dissipative Discrete Nonlinear Schrödinger equation subject to phase noise. Our results point towards the realisation of a large class of magnonics and spintronics devices, where disorder and noise can be used to enhance spin-dependent transport efficiency.

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