Analysis of the two-dimensional Datta-Das spin field effect transistor

作者：Agnihotri P; Bandyopadhyay S^*

来源：Physica E: Low-Dimensional Systems and Nanostructures , 2010, 42(5): 1736-1740.

DOI：10.1016/j.physe.2010.01.032

• Spintronics
• Spin field effect transistor
• Ramsauer resonances

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.

• 出版日期2010-3