Electronic Properties of Strained Double-Weyl Systems

Pavlo O. Sukhachov, Eduard V. Gorbar, Igor Shovkovy, Vladimir A. Miransky

Research output: Contribution to journalArticle

3 Citations (Scopus)

Abstract

The effects of strains on the low-energy electronic properties of double-Weyl phases are studied in solids and cold-atom optical lattices. The principal finding is that deformations do not couple, in general, to the low-energy effective Hamiltonian as a pseudoelectromagnetic gauge potential. The response of an optical lattice to strains is simpler, but still only one of the several strain-induced terms in the corresponding low-energy Hamiltonian can be interpreted as a gauge potential. Most interestingly, the strains can induce a nematic order parameter that splits a double-Weyl node into a pair of Weyl nodes with the unit topological charges. The effects of deformations on the motion of wavepackets in the double-Weyl optical lattice model are studied. It is found that, even in the undeformed lattices, the wavepackets with opposite topological charges can be spatially split. Strains, however, modify their velocities in a very different way and lead to a spin polarization of the wavepackets.

Original languageEnglish (US)
JournalAnnalen der Physik
DOIs
StateAccepted/In press - Jan 1 2018

Fingerprint

electronics
energy
polarization
atoms

Keywords

  • double-Weyl semimetals
  • electronic properties
  • optical lattices
  • strains
  • wavepackets

ASJC Scopus subject areas

  • Physics and Astronomy(all)

Cite this

Electronic Properties of Strained Double-Weyl Systems. / Sukhachov, Pavlo O.; Gorbar, Eduard V.; Shovkovy, Igor; Miransky, Vladimir A.

In: Annalen der Physik, 01.01.2018.

Research output: Contribution to journalArticle

Sukhachov, Pavlo O. ; Gorbar, Eduard V. ; Shovkovy, Igor ; Miransky, Vladimir A. / Electronic Properties of Strained Double-Weyl Systems. In: Annalen der Physik. 2018.
@article{f55898509c984a5688ec6b6792ecae55,
title = "Electronic Properties of Strained Double-Weyl Systems",
abstract = "The effects of strains on the low-energy electronic properties of double-Weyl phases are studied in solids and cold-atom optical lattices. The principal finding is that deformations do not couple, in general, to the low-energy effective Hamiltonian as a pseudoelectromagnetic gauge potential. The response of an optical lattice to strains is simpler, but still only one of the several strain-induced terms in the corresponding low-energy Hamiltonian can be interpreted as a gauge potential. Most interestingly, the strains can induce a nematic order parameter that splits a double-Weyl node into a pair of Weyl nodes with the unit topological charges. The effects of deformations on the motion of wavepackets in the double-Weyl optical lattice model are studied. It is found that, even in the undeformed lattices, the wavepackets with opposite topological charges can be spatially split. Strains, however, modify their velocities in a very different way and lead to a spin polarization of the wavepackets.",
keywords = "double-Weyl semimetals, electronic properties, optical lattices, strains, wavepackets",
author = "Sukhachov, {Pavlo O.} and Gorbar, {Eduard V.} and Igor Shovkovy and Miransky, {Vladimir A.}",
year = "2018",
month = "1",
day = "1",
doi = "10.1002/andp.201800219",
language = "English (US)",
journal = "Annalen der Physik",
issn = "0003-3804",
publisher = "Wiley-VCH Verlag",

}

TY - JOUR

T1 - Electronic Properties of Strained Double-Weyl Systems

AU - Sukhachov, Pavlo O.

AU - Gorbar, Eduard V.

AU - Shovkovy, Igor

AU - Miransky, Vladimir A.

PY - 2018/1/1

Y1 - 2018/1/1

N2 - The effects of strains on the low-energy electronic properties of double-Weyl phases are studied in solids and cold-atom optical lattices. The principal finding is that deformations do not couple, in general, to the low-energy effective Hamiltonian as a pseudoelectromagnetic gauge potential. The response of an optical lattice to strains is simpler, but still only one of the several strain-induced terms in the corresponding low-energy Hamiltonian can be interpreted as a gauge potential. Most interestingly, the strains can induce a nematic order parameter that splits a double-Weyl node into a pair of Weyl nodes with the unit topological charges. The effects of deformations on the motion of wavepackets in the double-Weyl optical lattice model are studied. It is found that, even in the undeformed lattices, the wavepackets with opposite topological charges can be spatially split. Strains, however, modify their velocities in a very different way and lead to a spin polarization of the wavepackets.

AB - The effects of strains on the low-energy electronic properties of double-Weyl phases are studied in solids and cold-atom optical lattices. The principal finding is that deformations do not couple, in general, to the low-energy effective Hamiltonian as a pseudoelectromagnetic gauge potential. The response of an optical lattice to strains is simpler, but still only one of the several strain-induced terms in the corresponding low-energy Hamiltonian can be interpreted as a gauge potential. Most interestingly, the strains can induce a nematic order parameter that splits a double-Weyl node into a pair of Weyl nodes with the unit topological charges. The effects of deformations on the motion of wavepackets in the double-Weyl optical lattice model are studied. It is found that, even in the undeformed lattices, the wavepackets with opposite topological charges can be spatially split. Strains, however, modify their velocities in a very different way and lead to a spin polarization of the wavepackets.

KW - double-Weyl semimetals

KW - electronic properties

KW - optical lattices

KW - strains

KW - wavepackets

UR - http://www.scopus.com/inward/record.url?scp=85052366978&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=85052366978&partnerID=8YFLogxK

U2 - 10.1002/andp.201800219

DO - 10.1002/andp.201800219

M3 - Article

AN - SCOPUS:85052366978

JO - Annalen der Physik

JF - Annalen der Physik

SN - 0003-3804

ER -