Signatures of Dirac fermion-mediated magnetic order

Abstract

The spin-momentum locking of topological states offers an ideal platform to explore novel magneto-electric effects. These intimately depend on the ability to manipulate the spin texture in a controlled way. Here, we combine scanning tunneling microscopy with single atoms deposition to map the evolution of topological states under the influence of different magnetic perturbations. We obtain signatures of Dirac fermion-mediated magnetic order for extremely dilute adatoms concentrations. This striking observation is found to critically depend on the single adatoms magnetic anisotropy and the position of the Fermi level. Our findings open new perspectives in spin engineering topological states at the atomic scale and pave the way to explore novel spin-related topological phenomena with promising potential for applications.

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Cited by in corpus (46)

• Colloquium: Topological Band Theory
• Imaging Dirac-Mass Disorder from Magnetic Dopant-Atoms in the Ferromagnetic Topological Insulator Cr${}_x$(Bi${}_{0.1}$Sb${}_{0.9}$)${}_{2-x}$Te${}_3$
• Superconducting Topological Surface States in Non-centrosymmetric Bulk Superconductor PbTaSe2
• Probing topological quantum matter with scanning tunnelling microscopy
• Atomic Scale Visualization of Quantum Interference on a Weyl Semimetal Surface by Scanning Tunneling Microscopy/Spectroscopy
• Evidence of topological Shiba bands in artificial spin chains on superconductors
• Dimensional Crossover Induced Topological Hall Effect in a Magnetic Topological Insulator
• Direct evidence of ferromagnetism in a quantum anomalous Hall system
• Dual nature of magnetic dopants and competing trends in topological insulators
• Quasiparticle interference on type-I and type-II Weyl semimetal surfaces: a review
• Systematics of electronic and magnetic properties in the transition metal doped Sb${}_2$Te${}_3$ quantum anomalous Hall platform
• Filling of magnetic-impurity-induced gap in topological insulators by potential scattering
• An orbitally derived single-atom magnetic memory
• Effect of Rashba splitting on RKKY interaction in topological insulator thin films
• Systematics of molecular self-assembled networks at topological insulators surfaces
• Joule meets van der Waals: Mechanical dissipation via image potential states on a topological insulator surface
• Superconducting proximity effect in a topological insulator using Fe(Te,Se)
• Impurity scattering on the surface of topological insulator thin films
• Anomalous behavior of the electronic structure of (Bi${}_{1-x}$In${}_x$)${}_2$Se${}_3$ across the quantum-phase transition from topological to trivial insulator
• Universal response of the type-II Weyl semimetals phase diagram
• Impurity screening and stability of Fermi arcs against Coulomband magnetic scattering in a Weyl monopnictide
• Velocity-determined anisotropic behaviors of RKKY interaction in 8-\textit{Pmmn} borophene
• Non-magnetic ground state of Ni adatoms on Te-terminated bismuth chalcogenide topological insulators
• Dispersing artifacts in FT-STS: a comparison of set point effects across acquisition modes
• Mesoscopic electron focusing in topological insulators
• Mapping the effect of defect-induced strain disorder on the Dirac states of topological insulators
• Surface states in topological semimetal slab geometries
• Single electron gating of topological insulators
• Coulomb Blockade Effects in a Topological Insulator Grown on a High-Tc Cuprate Superconductor
• Lifetime and surface-to-bulk scattering off vacancies of the topological surface state in the three-dimensional strong topological insulators Bi2Te3 and Bi2Se3
• Interaction effects in a 1D flat band at a topological crystalline step edge
• Robust Gapless Surface State against Surface Magnetic Impurities on (Bi${}_{0.5}$Sb${}_{0.5}$)${}_2$Te${}_3$ Evidenced by In Situ Magnetotransport Measurements
• Scattering properties of the three-dimensional topological insulator Sb2Te3: Coexistence of topologically trivial and non-trivial surface states with opposite spin-momentum helicity
• Ambi-chiral anomalous Hall effect in magnetically doped topological insulators
• Spontaneous ferromagnetism and finite surface energy gap in the topological insulator Bi${}_2$Se${}_3$ from surface Bi$_\rm{Se}$ antisite defects
• Local moment formation and magnetic coupling of Mn guest atoms in Bi${}_2$Se${}_3$: a low-temperature ferromagnetic resonance study
• Scanning tunneling spectroscopy investigations of superconducting-doped topological insulators: Experimental pitfalls and results
• Topological insulator homojunctions including magnetic layers: the example of n-p type ($n$-QLs Bi${}_2$Se${}_3$/Mn-Bi${}_2$Se${}_3$) heterostructures
• Distinguishing Surface and Bulk Electromagnetism via Their Dynamics in an Intrinsic Magnetic Topological Insulator
• Exchange and collective behavior of magnetic impurities in a disordered helical metal
• Strong Spin-Orbit Torque effect on magnetic defects due to topological surface state electrons in Bi${}_2$Te${}_3$
• Wave-particle duality of electrons with spin-momentum locking
• Topological insulator in a helicoidal magnetization field
• Robust topological state against magnetic impurities observed in superconductor PbTaSe2
• Spin-polarized scanning tunneling microscopy measurement scheme for determining the quantum geometric tensor
• Bulk and surface electron scattering in disordered Bi${}_2$Te${}_3$ probed by quasiparticle interference