We propose a device concept, based on monolayer stanene, able to provide highly polarized spin currents (up to a 98%) with voltage-controlled spin polarization operating at room temperature and with small operating voltage (0.3 V). The concept exploits the presence of spin-polarized edge states in a stanene nanoribbon. The spin polarization of the total current can be modulated by a differential tuning of the transmission properties, and of the occupation of edge states of different spin, via the application of an in-plane electric field. We demonstrate device operation using ab-initio and quantum transport simulations.
@article{arxiv.1904.09254,
title = {Tunnel-Field-Effect Spin Filter from Two-Dimensional Antiferromagnetic Stanene},
author = {Enrique G. Marin and Damiano Marian and Giuseppe Iannaccone and Gianluca Fiori},
journal= {arXiv preprint arXiv:1904.09254},
year = {2019}
}