Can I read Spin Current Generation by Helical States in a Quasi-one-dimensional System on EtoBox?

Spin Current Generation by Helical States in a Quasi-one-dimensional System by Valin-Rodriguez, Manuel is a scholarly article available to read on EtoBox.

What is Spin Current Generation by Helical States in a Quasi-one-dimensional System about?

Time-reversal symmetry and rotational invariance in spin space characterize usual non-magnetic conductors. These symmetries give rise, at least, to four-fold degenerate multiplets which, by definition, exhibit a null total spin-momentum helicity. Thus, preventing a net spin transport. A proper choice of geometry along with the intrinsic symmetry of the Bychkov-Rashba spin-orbit interaction can be exploited to effectively reduce these two spin-related symmetries to the timereversal one. It is shown that, in an ideal geometry, a quantum dot with contacts having a specific geometry exhibit a single pair of helical propagating states which makes this system ideal for pure spin current generation. The strong quantization of the quantum dot's level structure would make this mechanism robust against temperature effects.

Author

Valin-Rodriguez, Manuel

Published

2011

Language

EN