Electric Field Control of Magnetism of a Mn Dimer Supported on a Carbon-Doped h-BN Surface

Abstract

Using density functional theory, we show that the interaction between two Mn atoms can be tuned from the antiferromagnetic (AFM) to the ferromagnetic (FM) state by creating charge disproportion between the two on a 2D surface. The nonmetallic planar heterostructure, the 2D surface, in our work is designed by doping carbon hexagon rings in a hexagonal boron nitride (h-BN) sheet. In addition, we show that an external electric field can be used to control the charge disproportion and hence the magnetism. In fact, our calculations demonstrate that the magnetic states of the dimer can be switched from AFM to FM, or vice versa, in an external electric field. The origin of this magnetic switching is explained by using the charge transfer from (or to) the Mn dimer to (or from) the 2D material. The switching between antiferromagnetic to ferromagnetic states can be useful for future spintronics applications.

Coexistence of electron and phonon topology in conjunction with quantum transport device modeling

“…Monolayer semiconductors, with direct bandgaps and strong light-matter interactions, hold great promise for the next generation of flexible electronics and optoelectronics [51]. Additionally, the exceptional spin transport properties and extended spin lifetimes of two-dimensional (2D) materials provide an exquisite platform for manipulating electron spins, positioning them as leading contenders in advanced spintronics applications [52,53].…”