Probing topological quantum matter with scanning tunnelling microscopy

Abstract

The search for topological phases of matter is evolving towards strongly interacting systems, including magnets and superconductors, where exotic effects emerge from the quantum-level interplay between geometry, correlation and topology. Over the past decade or so, scanning tunnelling microscopy has become a powerful tool to probe and discover emergent topological matter, because of its unprecedented spatial resolution, high-precision electronic detection and magnetic tunability. Scanning tunnelling microscopy can be used to probe various topological phenomena, as well as complement results from other techniques. We discuss some of these proof-of-principle methodologies applied to probe topology, with particular attention to studies performed under a tunable vector magnetic field, which is a relatively new direction of recent focus. We then project the future possibilities for atomic-resolution tunnelling methods in providing new insights into topological matter.

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Cited by in corpus (59)

• Discovery of unconventional chiral charge order in kagome superconductor KV3Sb5
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• Weyl, Dirac and high-fold chiral fermions in topological quantum materials
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• Intrinsic nature of chiral charge order in the kagome superconductor RbV3Sb5
• Tunable nodal kagome superconductivity in charge ordered RbV3Sb5
• Room-temperature quantum spin Hall edge state in a higher-order topological insulator Bi${}_4$Br${}_4$
• Discovery of charge order and corresponding edge state in kagome magnet FeGe
• Topological charge-entropy scaling in kagome Chern magnet TbMn${}_6$Sn${}_6$
• Creation and Manipulation of Higher-Order Topological States by Altermagnets
• Spin-phonon coupling driven Charge density wave in a Kagome Magnet
• Engineering interfacial quantum states and electronic landscapes by molecular nanoarchitectures
• A new class of bilayer kagome lattice compounds with Dirac nodal lines and pressure-induced superconductivity
• Quantum Interactions in Topological R166 Kagome Magnet
• Transport response of topological hinge modes in $\alpha$-Bi${}_4$Br${}_4$
• What's knot to like? Observation of a linked loop quantum state
• Discovery of a hybrid topological quantum state in an elemental solid
• Orbital hybridization-driven charge density wave transition in CsV3Sb5 kagome superconductor
• Scanning tunneling spectroscopy of Majorana zero modes in a Kitaev spin liquid
• Thermal dynamics of charge density wave pinning in ZrTe3
• Quantum oscillations in kagome metals (Ti, Zr, Hf)V6Sn6 at Van Hove filling
• Optical bulk-boundary dichotomy in a quantum spin Hall insulator
• Atomically-precise engineering of spin-orbit polarons in a kagome magnetic Weyl semimetal
• Spin-Textured Neutron Beams with Orbital Angular Momentum
• Discovery of a Topological Charge Density Wave
• Stacking-induced Chern insulator
• From edge to bulk: Cavity induced displacement of topological non-local qubits
• Unveiling non-Abelian statistics of vortex Majorana bound states in iron-based superconductors using fermionic modes
• Perspective: imaging atomic step geometry to determine surface terminations of kagome materials and beyond
• Autonomous convergence of STM control parameters using Bayesian Optimization
• Spin excitations in the kagome-lattice metallic antiferromagnet Fe${}_{0.89}$Co${}_{0.11}$Sn
• Low-temperature T-linear resistivity in the strange metal phase of overdoped cuprate superconductors due to umklapp scattering from a spin excitation
• Evidence for electronic signature of magnetic transition in topological magnet HoSbTe
• Review: Advanced characterization of the spatial variation of moiré heterostructures and moiré excitons
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• Quasiparticle scattering interference in cuprate superconductors
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• Detecting winding and Chern numbers in topological matter using spectral function
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• Symmetry-protected topological wire in a topological vacuum