Electron-electron interactions in a one-dimensional quantum-wire spin filter -: art. no. 041309

The combined presence of a Rashba and a Zeeman effect in a ballistic one-dimensional conductor generates a spin pseudogap and the possibility to propagate a beam with well-defined spin orientation. Without interactions, transmission through a barrier gives a relatively well-polarized beam. Using renormalization group arguments, we examine how electron-electron interactions may affect the transmission coefficient and the polarization of the outgoing beam.