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Graphene-based spin-pumping transistor

机译:石墨烯基自旋泵晶体管

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摘要

We demonstrate with a fully quantum-mechanical approach that graphene can function as gate-controllable transistors for pumped spin currents, i.e., a stream of angular momentum induced by the precession of adjacent magnetizations, which exists in the absence of net charge currents. Furthermore, we propose as a proof of concept how these spin currents can be modulated by an electrostatic gate. Because our proposal involves nanosized systems that function with very high speeds and in the absence of any applied bias, it is potentially useful for the development of transistors capable of combining large processing speeds, enhanced integration, and extremely low-power consumption.
机译:我们用一种完全量子力学的方法证明了石墨烯可以用作泵浦自旋电流(即在没有净电荷电流的情况下由相邻磁化的进动引起的角动量流)的栅极可控晶体管。此外,我们提出了一个概念证明,即如何通过静电门调制这些自旋电流。因为我们的建议涉及纳米系统,该系统可以在不施加任何偏置的情况下以非常高的速度运行,因此对于开发能够结合大处理速度,增强的集成度和极低的功耗的晶体管可能很有用。

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