@conference {339, title = {A Multi-functional Spintronic Device Driven by Spin-orbit Interactions}, year = {2016}, month = {25{\textendash}27 Jan 2016}, pages = {O3-NP1 01}, publisher = {Annual Meeting of the Physical Society of the Republic of China}, address = {National Sun Yat-sen University, Kaohsiung}, abstract = {We propose a simple two-terminal device that operates simultaneously as (i) a spin inverter for an incident polarized electron, (ii) a spin polarizer for an unpolarized source and (iii) a tunable spin current attenuator at certain range of electron energies. The device consists of a U-shaped nanowire with a uniform Dresselhaus spin-orbit coupling and a spatially-modulated Rashba spin-orbit coupling along the curved section. The latter is implemented through a tunable gate voltage at every alternating segment along the wire{\textquoteright}s arc. This multi-purpose device does not need magnetic components or an external magnetic field to carry out the different functions as enumerated above. We discuss how the interplay of the wire{\textquoteright}s geometry and the spin-orbit interaction present in the device drives its spin transport.}, url = {http://psroc2016.conf.tw}, author = {Carlos Baldo III and Cristine Villagonzalo} }