Spin transport and polarization properties of manganese-doped dual-guanine molecule

TL;DR

This study investigates the spin transport and polarization in manganese-doped dual-guanine molecules, revealing their potential as biological semiconductors and spin filters, with tunable properties via Rashba spin-orbit interaction.

Contribution

It demonstrates that manganese-doped dual-guanine molecules act as biological semiconductors and spin filters, introducing a new approach to molecular spintronics with controllable spin properties.

Findings

Manganese-doped dual-guanine molecules behave as perfect spin filters.

The molecules can function as spin switches with Rashba spin-orbit interaction.

High conductance is achieved through Fano-Kondo-Rashba resonance effects.

Abstract

We study the spin transport and polarization properties of manganese-doped dual-guanine molecules connected to graphene leads using non-equilibrium Green's function method. It is shown that a manganese doped dual-guanine molecule is a biological semiconductor and behaves as a prefect spin filter. We show that this semiconductor can behave as a spin switch when the Rashba spin-orbit interaction is considered. In addition, it is shown that, a large conductance is observed due to the Fano-Kondo-Rashba resonance effect.