• Rapid Communication

Fermi arcs formation in Weyl semimetals: The key role of intervalley interaction

Zh. A. Devizorova and V. A. Volkov
Phys. Rev. B 95, 081302(R) – Published 14 February 2017

Abstract

We propose an analytical model describing Fermi arc surface states observed in the recent investigations of Weyl semimetals. The effective two-valley Hamiltonian is supplemented by the boundary conditions taking into account both the intravalley and intervalley interfacial interactions. We demonstrate that the latter is crucial for the formation of the surface states having the form consistent with the experimental data. Depending on the magnitude and interplay between the intravalley and intervalley interactions, the Fermi arc connects two nearby or distant valleys. Moreover, the emergence of additional Fermi contours (closed curves not intersecting the Weyl points) can be understood in the simplest four-valley approximation. These results open up opportunities for searching new effects in Weyl semimetals under an external field.

  • Figure
  • Figure
  • Figure
  • Figure
  • Received 21 November 2016
  • Revised 29 January 2017

DOI:https://doi.org/10.1103/PhysRevB.95.081302

©2017 American Physical Society

Physics Subject Headings (PhySH)

Condensed Matter, Materials & Applied Physics

Authors & Affiliations

Zh. A. Devizorova and V. A. Volkov

  • Moscow Institute of Physics and Technology, 141700 Dolgoprudny, Russia and Kotelnikov Institute of Radio Engineering and Electronics RAS, 125009 Moscow, Russia

Article Text (Subscription Required)

Click to Expand

References (Subscription Required)

Click to Expand
Issue

Vol. 95, Iss. 8 — 15 February 2017

Reuse & Permissions
Access Options
Author publication services for translation and copyediting assistance advertisement

Authorization Required


×
×

Images

×

Sign up to receive regular email alerts from Physical Review B

Log In

Cancel
×

Search


Article Lookup

Paste a citation or DOI

Enter a citation
×