Chiral Wave-packet Scattering in Weyl Semimetals

Abstract

In quantum mechanics, a particle is best described by the wave packet instead of the plane wave. Here, we study the wave-packet scattering problem in Weyl semimetals with the low-energy Weyl fermions of different chiralities. Our results show that the wave packet acquires a chirality-protected shift in the single impurity scattering process. More importantly, the chirality-protected shift can lead to an anomalous scattering probability, thus, affects the transport properties in Weyl semimetals. We find that the ratio between the transport lifetime and the quantum lifetime increases sharply when the Fermi energy approaches to the Weyl nodes, providing an explanation on the experimentally observed the ultrahigh mobility in topological (Weyl or Dirac) semimetals.

References in corpus (14)

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• Quantized Circulation of Anomalous Shift in Interface Reflection
• Tuning the electronic and the crystalline structure of LaBi by pressure
• Double Andreev Reflections in Type-II Weyl Semimetal-Superconductor Junctions
• Transverse Shift in Andreev Reflection
• Kondo Effect with Weyl Semimetal Fermi Arcs
• Fermi arc induced vortex structure in Weyl beam shifts
• Global Phase Diagram of Disordered Type-II Weyl Semimetals
• Transverse shift in crossed Andreev reflection
• Anomalous spatial shifts in interface electronic scattering
• Exploring self-consistency of the equations of axion electrodynamics in Weyl semimetals
• Unconventional pairing induced anomalous transverse shift in Andreev reflection
• Low-energy electronic properties of Weyl semimetal quantum dot
• Black hole mirages: electron lensing and Berry curvature effects in inhomogeneously tilted Weyl semimetals
• Optical Signatures of the Chiral Anomaly in Mirror-Symmetric Weyl Semimetals
• Optical properties and energy propagation in a dielectric medium supporting magnetic current
• Quantum collision theory in flat bands
• Anomalous spin Nernst effect in Weyl semimetals
• Giant and Broadband Circular Dichroism from Particle-Hole Symmetry Breaking in Weyl Semimetals