Quasiparticle interference on type-i and type-ii weyl semimetal surfaces: A review

Hao Zheng, M. Zahid Hasan

Research output: Contribution to journalReview article

21 Scopus citations

Abstract

Weyl semimetals are a new member of the topological materials family, featuring a pair of singly degenerate Weyl cones with linear dispersion around the nodes in the bulk, and Fermi arcs on the surface. Depending on whether the system conserves or violates Lorentz symmetry, Weyl semimetals can be categorized into two classes. Photoemission spectroscopy measurements have confirmed the TaAs class and WTe 2 class of Weyl semimetals as type-I and type-II, respectively. This review article aims to elucidate and elaborate on the basic concepts of Weyl semimetals and quasiparticle interference experiments on both type-I and type-II Weyl semimetals. The versatile results which reveal (1) the topological sink effect of the surface carriers, the unique feature of the Fermi arc state; (2) the weakly bound nature of the Fermi arc surface state; (3) the orbital-dependent scattering channels on the surface; (4) a mirror symmetry-protected surface Dirac cone, are summarily discussed. Finally, a perspective toward the future applications of quasiparticle interference techniques on topological materials is presented.

Original languageEnglish (US)
Article number1466661
Pages (from-to)569-591
Number of pages23
JournalAdvances in Physics: X
Volume3
Issue number1
DOIs
StatePublished - Jan 1 2018

All Science Journal Classification (ASJC) codes

  • Physics and Astronomy(all)

Keywords

  • Fermi arc
  • Quasiparticle interference
  • Scanning tunneling microscopy
  • Weyl semimetal

Fingerprint Dive into the research topics of 'Quasiparticle interference on type-i and type-ii weyl semimetal surfaces: A review'. Together they form a unique fingerprint.

  • Cite this