# Nanostructured graphene for spintronics

## TL;DR

This paper demonstrates that graphene with zigzag edges can be engineered into spintronic devices capable of efficient spin filtering and splitting, with robustness to disorder and potential for practical implementation.

## Contribution

It introduces a novel design of graphene-based spintronic devices using zigzag triangular antidots that perform key functionalities with high efficiency and robustness.

## Key findings

- Devices achieve near-perfect spin filtering.
- Performance remains robust under disorder.
- Distinct gate-voltage responses differentiate spin states.

## Abstract

Zigzag edges of the honeycomb structure of graphene exhibit magnetic polarization making them attractive as building blocks for spintronic devices. Here, we show that devices with zigzag edged triangular antidots perform essential spintronic functionalities, such as spatial spin-splitting or spin filtering of unpolarized incoming currents. Near-perfect performance can be obtained with optimized structures. The device performance is robust against substantial disorder. The gate-voltage dependence of transverse resistance is qualitatively different for spin-polarized and spin-unpolarized devices, and can be used as a diagnostic tool. Importantly, the suggested devices are feasible within current technologies.