Topological phase and edge states dependence of the RKKY interaction in zigzag silicene nanoribbon

Abstract

We propose versatile materials based on the Ruderman-Kittel-Kasuya-Yosida (RKKY) interaction in a zigzag silicene nanoribbon (ZSNR) on half filling in the presence of an out-of-plane electric field. We show that the topological phase transition in the band dispersion of ZSNR can be probed by using the RKKY interaction. We find that, due to the zero-energy edge states of the ZSNR, the exchange coupling is significantly enhanced when the impurities are located on the zigzag edges, and also explore that the strength of the interaction in the topological insulator phase is much greater than that when the system is in the band insulator region. We present a model to investigate the phase of a system of two magnetic impurities located on the edge of the ZSNR and find that three different magnetic phases, spiral, ferromagnetic, and anti-ferromagnetic, are possible for different values of the electric field. This electrical tunability of the magnetic phases in silicene can be explored by using current experimental techniques and can be of interest in the field of spintronics.

Published version, 7 pages, 5 figures

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• Non-Linear Spin Susceptibility in Topological Insulators
• Exchange interaction of magnetic impurities in biased bilayer phosphorene nanoribbon
• Velocity-determined anisotropic behaviors of RKKY interaction in 8-\textit{Pmmn} borophene
• Probing topological phases in a perturbed Kane-Mele model via RKKY interaction: Application to monolayer jacutingaite Pt${}_2$HgSe${}_3$
• Symmetries and hybridization in the indirect interaction between magnetic moments in MoS${}_2$ nanoflakes
• Long range of indirect exchange interaction on the edges of MoS${}_2$ flakes
• RKKY coupling in Weyl semimetal thin films
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• Competing long-range interactions and spin vector chirality in spin-chains
• Resonance spin transfer torque in ferromagnetic/normal/ferromagnetic spin-valve structure of topological insulators
• Tilt-induced anomalous thermal transport in normal/superconducting borophane junctions
• Strain-induced modulation of exchange interaction in monolayer zigzag nanoribbons of B${}_2$S
• Tuning the electronic structure and magnetic coupling in armchair B${}_2$S nanoribbons using strain and staggered sublattice potential
• Selective generation and amplification of RKKY interactions by P-N interface
• RKKY interactions mediated by topological states in transition metal doped bismuthene
• Topological Luttinger semimetallic phase accompanied with surface states realized in silicon
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• Two-dimensional parabolic Dirac system in the presence of non-magnetic and magnetic impurities
• RKKY interaction in graphene at finite temperature
• Highly tunable magnetic coupling in ultrathin topological insulator films due to impurity resonances
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• Probing divacancy defects in a zigzag graphene nanoribbon through RKKY exchange interaction