Tunnel-Field-Effect Spin Filter from Two-Dimensional Antiferromagnetic Stanene

Abstract

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.

15 pages, 5 figures

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Cited by in corpus (2)

• Spin-valley polarized edge states and quantum anomalous Hall states controlled by side potential in 2D honeycomb lattices
• Epitaxial binding and strain effects of monolayer stanene on the Al${}_2$O${}_3$(0001) surface