title: Spin-dependent quasiparticle transport in aluminum single-electron transistors.
abstract: 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.
authors.affiliation: Australian Research Centre of Excellence for Quantum Computer Technology, University of New South Wales, Sydney NSW 2052, Australia. andrew.ferguson@unsw.edu.au
authors.forename: A J
authors.initials: AJ
authors.lastname: Ferguson
authors.forename: S E
authors.initials: SE
authors.lastname: Andresen
authors.forename: R
authors.initials: R
authors.lastname: Brenner
authors.forename: R G
authors.initials: RG
authors.lastname: Clark