Tunable and direction-dependent group velocities in topologically protected edge states

Abstract

Topological effects continue to fascinate physicists since more than three decades. One of their main applications are high-precision measurements of the resistivity. We propose to make also use of the spatially separated edge states. It is possible to realize strongly direction-dependent group velocities. They can also be tuned over orders of magnitude so that robust delay lines and interference devices are within reach.

5 pages, 4 figures

References in corpus (7)

• Experimental Observation of the Quantum Anomalous Hall Effect in a Magnetic Topological Insulator
• High-precision realization of robust quantum anomalous Hall state in a hard ferromagnetic topological insulator
• Scale-Invariant Dissipationless Chiral Transport in Magnetic Topological Insulators beyond the Two-Dimensional Limit
• An On-Demand Coherent Single Electron Source
• Prediction of Near-Room-Temperature Quantum Anomalous Hall Effect on Honeycomb Materials
• Electrical control of a solid-state flying qubit
• Nano-wires with surface disorder: Giant localization lengths and quantum-to-classical crossover

Cited by in corpus (6)

• Tunable edge states and their robustness towards disorder
• Topological magnon bands for magnonics
• Topological magnetic excitations
• Delocalization of edge states in topological phases
• Tunable dispersion of the edge states in the integer quantum Hall effect
• Tunable signal velocity in the integer quantum Hall effect of tailored graphene