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.

4 pages, 4 figures

References in corpus (5)

• Gate-Voltage Studies of Discrete Electronic States in Al Nanoparticles
• Spin injection and spin accumulation in all-metal mesoscopic spin valves
• Quantum Dot as Spin Filter and Spin Memory
• Semiconductor few-electron quantum dot operated as a bipolar spin filter
• Development and operation of the twin radio frequency single electron transistor for solid state qubit readout

Cited by in corpus (6)

• Direct microwave measurement of Andreev-bound-state dynamics in a proximitized semiconducting nanowire
• Non-Poissonian Quantum Jumps of a Fluxonium Qubit due to Quasiparticle Excitations
• Experimental Spin Ratchet
• Energy gap measurement of nanostructured thin aluminium films for use in single Cooper-pair devices
• Microsecond resolution of quasiparticle tunneling in the single-Cooper-pair-transistor
• Cooling of a Micro-mechanical Resonator by the Back-action of Lorentz Force