High magnetoresistance of a hexagonal boron nitride-graphene heterostructure-based MTJ through excited-electron transmission.

ABSTRACT: This work presents an ab initio study of a few-layer hexagonal boron nitride (hBN) and hBN-graphene heterostructure sandwiched between Ni(111) layers. The aim of this study is to understand the electron transmission process through the interface. Spin-polarized density functional theory calculations and transmission probability calculations were conducted on Ni(111)/nhBN/Ni(111) with n = 2, 3, 4, and 5 as well as on Ni(111)/hBN-Gr-hBN/Ni(111). Slabs with magnetic alignment in an anti-parallel configuration (APC) and parallel configuration (PC) were considered. The pd-hybridizations at both the upper and lower interfaces between the Ni slabs and hBN were found to stabilize the system. The Ni/nhBN/Ni magnetic tunnel junction (MTJ) was found to exhibit a high tunne

SUBMITTER: Harfah H 

PROVIDER: S-EPMC9417163 | biostudies-literature | 2021 Dec

REPOSITORIES: biostudies-literature