Induced axion-phason field in Weyl semimetals

The Weyl semimetal in a constant magnetic field is investigated with the ground state for the lowest ( n = 0 ) Landau levels corresponding to spin-down ( σ3= − 1 ). In the presence of an electron-phonon coupling in the ground state, an attractive interaction for the polarized spin and opposite chira...

Full description

Saved in:
Bibliographic Details
Published in:Physical review. B 2021-06, Vol.103 (23), p.1, Article 235113
Main Authors: Schmeltzer, D., Saxena, Avadh
Format: Article
Language:English
Subjects:
Axions
Charge density waves
Chirality
Electric fields
Ground state
Magnetic fields
Material Science
Metalloids
Polarization (spin alignment)
Sliding
Topological materials
Weyl semimetal
Citations: Items that this one cites
Items that cite this one
Online Access:Get full text
Tags: Add Tag
No Tags, Be the first to tag this record!
Description
Summary:The Weyl semimetal in a constant magnetic field is investigated with the ground state for the lowest ( n = 0 ) Landau levels corresponding to spin-down ( σ3= − 1 ). In the presence of an electron-phonon coupling in the ground state, an attractive interaction for the polarized spin and opposite chirality is generated. A two-body attractive interaction projected to the two lowest ( n = 0 ) chiral Landau levels with the same spin polarization is obtained. The higher Landau level states ( n ≠ 0 ) are treated at the one-loop approximation with the two chiralities containing spins polarized as σ3= ± 1 . Using the chiral anomaly in one dimension we show that the sliding phase is controlled by the electric field. This theory, for a Weyl semimetal with two nodes in the direction of the applied magnetic field, gives rise to a sliding charge density wave observed by Gooth et al. [Nature (London) 575, 315 (2019)].
ISSN:2469-9950
2469-9969
DOI:10.1103/PhysRevB.103.235113