2011

Rashba diamond in an Aharonov-Casher ring

Rashba diamond in an Aharonov-Casher ring
X. Wang and A. Manchon
Appl. Phys. Lett.  99, 142507 (2011)​​​​​
X. Wang, A. Manchon
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2011
​Spin interference due to Rashba spin-orbit interaction (SOI) in a ballistic two-dimensional electron gas ring conductor submitted to a bias voltage is investigated theoretically. We calculate the scattering matrices and differential conductance with lead-ring junction coupling as an adjustable parameter. Due to the interference of electronic waves traversing the ring, the differential conductance modulated by both bias voltage and SOI exhibits a diamond-shaped pattern, thus termed as Rashba diamond. This feature offers a supplementary degree of freedom to manipulate phase interference.