Магнитные взаимодействия в кремниевых наноструктурах

Abstract

Within this work we show the possibility of formation non-trivial magnetic configuration in Si(111):{C,Si,Sn,Pb}(√3×√3) systems. Starting form the first principle calculations with spin-orbit coupling effect, we derive the corresponding parameters for spin and electronic models, and solve them utilizing Hartee-Fock and Monte Carlo methods. As a result, complex spin patterns, such as interpenetrating spin spirals, were shown to stabilize in the Si(111):{Sn,Pb} systems at low temperatures. Finally, at high magnetic fields, we predict the stabilization of an antiferromagnetic skyrmion lattice state.