Quasiparticle Interference Studies of Quantum Materials

Abstract

Exotic electronic states are realized in novel quantum materials. This field is revolutionized by the topological classification of materials. Such compounds necessarily host unique states on their boundaries. Scanning tunneling microscopy studies of these surface states have provided a wealth of spectroscopic characterization, with the successful cooperation of ab initio calculations. The method of quasiparticle interference imaging proves to be particularly useful for probing the dispersion relation of the surface bands. Herein, how a variety of additional fundamental electronic properties can be probed via this method is reviewed. It is demonstrated how quasiparticle interference measurements entail mesoscopic size quantization and the electronic phase coherence in semiconducting nanowires; helical spin protection and energy-momentum fluctuations in a topological insulator; and the structure of the Bloch wave function and the relative insusceptibility of topological electronic states to surface potential in a topological Weyl semimetal.

References in corpus (18)

• Boron nitride substrates for high-quality graphene electronics
• The structure of suspended graphene sheets
• Signatures of Majorana fermions in hybrid superconductor-semiconductor nanowire devices
• Majorana Fermions and a Topological Phase Transition in Semiconductor-Superconductor Heterostructures
• Evidence of Majorana fermions in an Al - InAs nanowire topological superconductor
• Observation of Majorana Fermions in Ferromagnetic Atomic Chains on a Superconductor
• Observation of Majorana Fermions in a Nb-InSb Nanowire-Nb Hybrid Quantum Device
• Topological Surface States Protected From Backscattering by Chiral Spin Texture
• Topological response in Weyl semimetals and the chiral anomaly
• Spin-charge separation and localization in one-dimension
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• Imaging the Fano Lattice to 'Hidden Order' Transition in URu2Si2
• Imaging Dirac-Mass Disorder from Magnetic Dopant-Atoms in the Ferromagnetic Topological Insulator Cr${}_x$(Bi${}_{0.1}$Sb${}_{0.9}$)${}_{2-x}$Te${}_3$
• Visualizing heavy fermions emerging in a quantum critical Kondo lattice
• Direct Measurement of the Out-of-Plane Spin Texture in the Dirac Cone Surface State of a Topological Insulator
• Quasiparticle Interference, quasiparticle interactions and the origin of the charge density-wave in 2H-NbSe${}_2$
• Three-particle collisions in quantum wires: Corrections to thermopower and conductance
• Energy relaxation and thermalization of hot electrons in quantum wires

Cited by in corpus (2)

• Living on the edge: Topology, electrostatics and disorder
• Power law decay of local density of states oscillations near a line defect in a system with semi-Dirac points