Electrical detection of spin transport in lateral ferromagnet–semiconductor devices

By X. Lou, C. Adelmann, S. Crooker, E. Garlid, J. Zhang, S. Reddy, S. Flexner, C. Palmstrom, P. Crowell. 2006

719 citations recorded by the source corpus.

The development of semiconductor spintronics requires a reliable electronic means for writing, processing and reading information using spin-polarized carriers. Here, we demonstrate a fully electrical scheme for achieving spin injection, transport and detection in a single device. Our device consists of a lateral semiconducting channel with two ferromagnetic contacts, one of which serves as a source of spin-polarized electrons and the other as a detector. Spin detection in the device is achieved through a non-local, spin-sensitive, Schottky-tunnel-barrier contact whose electrochemical potential depends on the relative magnetizations of the source and detector. We verify the effectiveness of this approach by showing that a transverse magnetic field suppresses the non-local signal at the detection contact by inducing spin precession and dephasing in the channel (the Hanle effect). The sign of the signal varies with the injection current and is correlated with the spin polarization in the channel as determined by optical Kerr rotation measurements.

Subfields: Atomic and Molecular Physics, and Optics, Electrical and Electronic Engineering

View Paper: https://www.semanticscholar.org/paper/ba9f701c535b0b2c8099850c5a8b44633caa5bf4

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The researchers whose trusted networks rank it highest, strongest advocate first. Every researcher gets a different order.

In Atomic and Molecular Physics, and Optics

  1. David D. Awschalom
  2. B. V. van Wees
  3. M. E. Flatté
  4. A. Brataas
  5. R. Duine
  6. Albert Fert
  7. Axel Hoffmann
  8. Wolfgang Wernsdorfer

In Electrical and Electronic Engineering

  1. David D. Awschalom
  2. M. E. Flatté
  3. A. Brataas
  4. B. V. van Wees
  5. Albert Fert
  6. Wolfgang Wernsdorfer

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