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Title: Tunable axial gauge fields in engineered Weyl semimetals: semiclassical analysis and optical lattice implementations

Journal Article · · 2D Materials
ORCiD logo [1];  [2];  [3]; ORCiD logo [4]
  1. Max-Planck-Inst. fur Physik komplexer Systeme, Dresden (Germany)
  2. Lawrence Berkeley National Lab. (LBNL), Berkeley, CA (United States). Materials Sciences Division; Univ. of California, Berkeley, CA (United States). Dept. of Physics; Univ. of Texas, Dallas, Richardson, TX (United States)
  3. Univ. Libre de Bruxelles, Brussels (Belgium). Center for Nonlinear Phenomena and Complex Systems
  4. Univ. of California, Berkeley, CA (United States). Dept. of Physics; Univ. of Grenoble (France). Inst. Neel

In this work, we describe a toolbox to realize and probe synthetic axial gauge fields in engineered Weyl semimetals. These synthetic electromagnetic fields, which are sensitive to the chirality associated with Weyl nodes, emerge due to spatially and temporally dependent shifts of the corresponding Weyl momenta. First, we introduce two realistic models, inspired by recent cold-atom developments, which are particularly suitable for the exploration of these synthetic axial gauge fields. Second, we describe how to realize and measure the effects of such axial fields through center-ofmass observables, based on semiclassical equations of motion and exact numerical simulations. Finally, in particular, we suggest realistic protocols to reveal an axial Hall response due to the axial electric field E5, as well as axial cyclotron orbits and chiral pseudo-magnetic effect due to the axial magnetic field B5.

Research Organization:
Lawrence Berkeley National Laboratory (LBNL), Berkeley, CA (United States)
Sponsoring Organization:
USDOE Office of Science (SC), Basic Energy Sciences (BES) (SC-22)
Grant/Contract Number:
AC02-05CH11231
OSTI ID:
1461128
Journal Information:
2D Materials, Journal Name: 2D Materials Journal Issue: 2 Vol. 5; ISSN 2053-1583
Publisher:
IOP PublishingCopyright Statement
Country of Publication:
United States
Language:
English

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Electronic Properties of Strained Double-Weyl Systems journal August 2018
Axial-field-induced chiral channels in an acoustic Weyl system journal February 2019
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Floquet Chiral Magnetic Effect journal August 2019
Anomalous conductance scaling in strained Weyl semimetals journal November 2019
Topological photonics journal March 2019
Theory of the Strain-Induced Magnetoelectric Effect in Planar Dirac Systems text January 2017
Electronic properties of strained double-Weyl systems text January 2018