Triple Quantum Dot Molecule as a Spin-Splitter

我们建议一个纺纱裂口由于库仑封锁效果和费用工作的三倍的量点创作了，旋转偏爱在外部电子来源和排水管上适用。旋转偏爱仅仅在二根排水管上被使用并且给他们的纺纱依赖者化学潜力，它为电子充当驱动力极化纺纱的运输。由调节偏爱和点的层次，旋转起来和旋转下面电子能同时被切开或从来源分开了成二根不同排水管。我们证明如此的一个通道过程以通过外部领先流动的点或电流上的旋转累积是可检测的。现在的设备在当前存在的技术以内相当简单、可实现。

We propose a spin-splitter composed of triple quantum dots that works due to the Coulomb blockade effect and the charge and spin biases applied on external electron source and drains. The spin biases are applied only on the two drains and give their spin-dependent chemical potentials, which act as the driving forces for electron spin-polarized transport. By tuning the biases and the dots＇ levels, spin-up and spin-down electrons can be simultaneously split or separated from the source into two different drains. We show that such a tunneling process is detectable in terms of the spin accumulations on the dots or the currents flowing through the external leads. The present device is quite simple and realizable within currently existing technologies.