Display options
Cite
Isobe H, Nagaosa N. Coulomb Interaction Effect in Weyl Fermions with Tilted Energy Dispersion in Two Dimensions. Phys Rev Lett. 2016;116(11):116803doi: 10.1103/PhysRevLett.116.116803.
Isobe, H., & Nagaosa, N. (2016). Coulomb Interaction Effect in Weyl Fermions with Tilted Energy Dispersion in Two Dimensions. Physical review letters, 116(11), 116803. https://doi.org/10.1103/PhysRevLett.116.116803
Isobe, Hiroki, and Nagaosa, Naoto. "Coulomb Interaction Effect in Weyl Fermions with Tilted Energy Dispersion in Two Dimensions." Physical review letters vol. 116,11 (2016): 116803. doi: https://doi.org/10.1103/PhysRevLett.116.116803
Isobe H, Nagaosa N. Coulomb Interaction Effect in Weyl Fermions with Tilted Energy Dispersion in Two Dimensions. Phys Rev Lett. 2016 Mar 18;116(11):116803. doi: 10.1103/PhysRevLett.116.116803. Epub 2016 Mar 18. PMID: 27035318.
Copy Download .nbib Format: NLM
Share it on

Phys Rev Lett. 2016 Mar 18;116(11):116803. doi: 10.1103/PhysRevLett.116.116803. Epub 2016 Mar 18.

Coulomb Interaction Effect in Weyl Fermions with Tilted Energy Dispersion in Two Dimensions.

Physical review letters

Hiroki Isobe, Naoto Nagaosa

Affiliations

  1. Department of Applied Physics, University of Tokyo, Bunkyo, Tokyo 113-8656, Japan.
  2. RIKEN Center for Emergence Matter Science (CEMS), Wako, Saitama 351-0198, Japan.

PMID: 27035318 DOI: 10.1103/PhysRevLett.116.116803

Abstract

Weyl fermions with tilted linear dispersions characterized by several different velocities appear in some systems including the quasi-two-dimensional organic semiconductor α-(BEDT-TTF)_{2}I_{3} and three-dimensional WTe_{2}. The Coulomb interaction between electrons modifies the velocities in an essential way in the low-energy limit, where the logarithmic corrections dominate. Taking into account the coupling to both the transverse and longitudinal electromagnetic fields, we derive the renormalization group equations for the velocities of the tilted Weyl fermions in two dimensions, and found that they increase as the energy decreases and eventually hit the speed of light c to result in the Cherenkov radiation. Especially, the system restores the isotropic Weyl cone even when the bare Weyl cone is strongly tilted and the velocity of electrons becomes negative in certain directions.

Publication Types