Document Type
Article
Original Publication Date
2004
Journal/Book/Conference Title
Applied Physics Letters
Volume
85
Issue
10
DOI of Original Publication
10.1063/1.1790038
Date of Submission
April 2015
Abstract
There is significant current interest in spintronic devices fashioned after a spin analog of the electro-opticmodulator proposed by Datta and Das [Appl. Phys. Lett.56, 665 (1990)]. In their modulator, the “modulation” of the spin-polarized current is carried out by tuning the Rashba spin-orbit interaction with a gate voltage. Here, we propose an analogous modulator where the modulation is carried out by tuning the Dresselhaus spin-orbit interaction instead, using a split gate. Additionally, the magnetization of the source and drain contacts in our device is transverseto the channel, whereas in the Datta-Dasdevice, it is along the channel. Therefore, in the present modulator, there is no magnetic field in the channel unlike in the case of the Datta-Dasmodulator. This can considerably enhance modulator performance.
Rights
Bandyopadhyay, S., Cahay, M. Alternate spintronic analog of the electro-optic modulator. Applied Physics Letters, 85, 1814 (2004). Copyright © 2004 AIP Publishing LLC.
Is Part Of
VCU Electrical and Computer Engineering Publications
Comments
Originally published at http://dx.doi.org/10.1063/1.1790038