Scanning tunneling spectroscopy and surface quasiparticle interference in models for the strongly correlated topological insulators SmB6 and PuB6

Abstract

SmB6 is one of the candidate compounds for topological Kondo insulators, a class of materials which combines a non-trivial topological band structure with strong electronic correlations. Here we employ a multiband tight-binding description, supplemented by a slave-particle approach to account for strong interactions, to theoretically study the surface-state signatures in scanning tunneling spectroscopy (STS) and quasiparticle interference (QPI). We discuss the spin structure of the three surface Dirac cones of SmB6 and provide concrete predictions for the energy and momentum dependence of the resulting QPI signal. Our results also apply to PuB6, a strongly correlated topological insulator with a very similar electronic structure.

5+8 pages, 4+5 figs, (v2) minor modifications, final version as published

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Cited by in corpus (23)

• Additional energy scale in SmB${}_6$ at low temperature
• Coexistence of light and heavy surface states in a topological multi-band Kondo insulator
• Surface-state spin textures and mirror Chern numbers in topological Kondo insulators
• Distinct topological crystalline phases in models for the strongly correlated topological insulator SmB6
• Incomplete Protection of the Surface Weyl Cones of the Kondo Insulator SmB${}_6$: Spin Exciton Scattering
• Excitonic and Nematic Instabilities on the Surface of Topological Kondo Insulators
• Model Hamiltonian for topological Kondo insulator SmB6
• Cubic hastatic order in the two-channel Kondo-Heisenberg model
• Field-induced Ferrohastatic Order in Cubic Non-Kramers Doublet Systems
• Spin textures on general surfaces of the correlated topological insulator SmB6
• Spin- and angle-resolved photoemission on the topological Kondo Insulator candidate: SmB6
• Quasiparticle multiplets and 5f electronic correlation in prototypical plutonium borides
• Kramers' doublet ground state in topological Kondo insulators
• ${\mathcal{Z}}_2$ classification for a novel antiferromagnetic topological insulating phase in three-dimensional topological Kondo insulator
• An STM perspective on hexaborides: Surface states of the Kondo insulator SmB${}_6$
• Surface reconstruction in a tight-binding model for the topological Kondo insulator SmB6
• Topology of SmB6 revisited by means of topological quantum chemistry
• Cotunneling into a Kondo lattice with odd hybridization
• Spontaneous symmetry breaking and quantum Hall valley ordering on the surface of topological hexaborides
• Valence transition in topological Kondo insulator
• Mapping out the emergence of topological features in the highly alloyed topological Kondo insulators Sm${}_{1-x}{M}_x$B${}_6$ ($M$=Eu, Ce)
• Correlation Induced Magnetic Topological Phases in Mixed-Valence Compound SmB6
• 3D Topological Kondo Insulators