The Effects of vertical electric field and charged impurities on the spin-polarized transport of $\beta$-antimonene armchair nanoribbons

TL;DR

This study investigates how vertical electric fields and charged impurities influence spin-polarized transport in antimonene nanoribbons, revealing that both factors increase spin-flip rates, with electric fields having a more pronounced effect.

Contribution

It provides a detailed analysis of the combined effects of electric fields and charged impurities on spin transport in antimonene nanoribbons using NEGF and tight-binding models.

Findings

Vertical electric fields increase spin-flip rates.

Charged impurities also enhance spin-flip rates.

Electric fields have a greater impact than charged impurities.

Abstract

The electronic properties of antimonene, single-layer Sb, are attracting great attention. In this paper, spin transport in armchair antimonene nanoribbon (ASbNR) is investigated. Following the tight-binding model, we calculate both the transmission probability and the conductance by means of the non-equilibrium Green's function (NEGF) method. The effects of an external electric field vertical to the ribbon plane are explored. Our results indicate that the spin-flip rate increases with the vertical electric field. Disorder effects on spin transport are addressed by considering the presence of charged impurities. It is found that charged impurities also enhance the spin-flip rate but to a lesser extent than the out-of-plane electric field.