Analysis of the two dimensional Datta-Das Spin Field Effect Transistor

Preprint English OPEN
Bandyopadhyay, S. (2010)
  • Related identifiers: doi: 10.1016/j.physe.2010.01.032
  • Subject: Condensed Matter - Mesoscale and Nanoscale Physics | Condensed Matter - Other Condensed Matter
    arxiv: Condensed Matter::Mesoscopic Systems and Quantum Hall Effect

An analytical expression is derived for the conductance modulation of a ballistic two dimensional Datta-Das Spin Field Effect Transistor (SPINFET) as a function of gate voltage. Using this expression, we show that the recently observed conductance modulation in a two-dimensional SPINFET structure does not match the theoretically expected result very well. This calls into question the claimed demonstration of the SPINFET and underscores the need for further careful investigation.
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