All-electrical injection and detection of a spin-polarized current using 1D conductors

T. M. Chen, M. Pepper, I. Farrer, G. A.C. Jones, D. A. Ritchie

Research output: Contribution to journalArticlepeer-review

26 Citations (Scopus)


All-electrical control of spin transport in nanostructures has been the central interest and challenge of spin physics and spintronics. Here we demonstrate on-chip spin polarizing or filtering actions by driving the gate-defined one dimensional (1D) conductor, one of the simplest geometries for integrated quantum devices, away from the conventional Ohmic regime. Direct measurement of the spin polarization of the emitted current was performed when the momentum degeneracy was lifted, wherein both the 1D polarizer for spin injection and the analyzer for spin detection were demonstrated. The results showed that a configuration of gates and applied voltages can give rise to a tunable spin polarization, which has implications for the development of spintronic devices and future quantum information processing.

Original languageEnglish
Article number177202
JournalPhysical review letters
Issue number17
Publication statusPublished - 2012 Oct 23

All Science Journal Classification (ASJC) codes

  • Physics and Astronomy(all)


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