# Spin Transport in Armchair Silicene Nanoribbon on the Substrate: The Role of Charged Impurity

## TL;DR

This study investigates how charged impurities in the substrate affect the electrical and spin transport properties of armchair silicene nanoribbons, revealing their impact on spin transmission and diffusion length.

## Contribution

It introduces a detailed analysis of spin transport in ASiNR considering charged impurity effects using non-equilibrium Green's function and tight-binding methods.

## Key findings

- Charged impurities influence spin transmission probabilities.
- Spin diffusion length varies with impurity charge.
- Comparison of spin diffusion length and mean free path.

## Abstract

In this work, electrical and spin properties of armchair silicene nanoribbon (ASiNR) in the presence of charged impurity is studied. The non-equilibrium Green's function along with multi-orbital tight-binding is applied to obtain transmission probability. different type of spin transmission probability in the ASiNR on a substrate is investigated. The charged impurities are located in the underlying substrate. Spin-flip along the channel is calculated by using spin transmission probability. Spin diffusion length in ASiNR for differently charged impurities is obtained and compared with the mean free path