Ferguson A J, Andresen S E, Brenner R, Clark R G
Australian Research Centre of Excellence for Quantum Computer Technology, University of New South Wales, Sydney NSW 2052, Australia.
Phys Rev Lett. 2006 Aug 25;97(8):086602. doi: 10.1103/PhysRevLett.97.086602.
We investigate the effect of Zeeman splitting on quasiparticle transport in normal-superconducting-normal (NSN) aluminum single-electron transistors (SETs). In the above-gap transport, the interplay of Coulomb blockade and Zeeman splitting leads to spin-dependence of the sequential tunneling. This creates regimes where either one or both spin species can tunnel onto or off the island. At lower biases, spin-dependence of the single quasiparticle state is studied, and operation of the device as a bipolar spin filter is suggested.
我们研究了塞曼分裂对正常-超导-正常（NSN）铝单电子晶体管（SET）中准粒子输运的影响。在能隙以上的输运中，库仑阻塞和塞曼分裂的相互作用导致了顺序隧穿的自旋依赖性。这产生了一种情况，即一种或两种自旋态的粒子都可以隧穿到岛上或从岛上隧穿出去。在较低偏压下，研究了单个准粒子态的自旋依赖性，并提出了将该器件用作双极自旋滤波器的操作方法。
