Spin Manipulation in One Dimensional Structures

ORAL

Abstract

We have investigated electron injection, in GaAs, from a quasi one-dimensional region into a two-dimensional electron gas. The spin texture of the injected electron is obtained by measuring focussing and we find that a spin separation is observed which is dependent on the length of the one-dimensional injector, the role of spin-orbit coupling in the 2D region is found to be dependent on the degree of polarisation of the injected electrons. The magnitude of the 0.7 anomaly follows the degree of spin polarisation which can be manipulated by injector geometry.

*Work Supported by EPSRC

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Presenters

  • Michael Pepper

    • University College London
    • London Centre for Nanotechnology, Univ Coll London

Authors

  • Michael Pepper

    • University College London
    • London Centre for Nanotechnology, Univ Coll London

  • Chengyu Yan

    • London Centre for Nanotechnology, Univ Coll London

  • Sanjeev Kumar

    • University College London
    • London Centre for Nanotechnology, Univ Coll London

  • Kalarikad Thomas

    • London Centre for Nanotechnology, Univ Coll London

  • David Ritchie

    • Cavendish Laboratory, University of Cambridge
    • University of Cambridge
    • Univ of Cambridge
    • Cavendish Laboratory, Cambridge University

  • Patrick See

    • National Physical Laboratory

  • Jonathan Griffiths

    • University of Cambridge
    • Cavendish Laboratory, Cambridge University

  • Ian Farrer

    • University of Sheffield
    • University of Cambridge
    • Cavendish Laboratory, Cambridge University

  • Geraint Jones

    • University of Cambridge
    • Cavendish Laboratory, Cambridge University