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This content will become publicly available on January 19, 2019

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

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 E 5, as well as axial cyclotron orbits and chiral pseudo-magnetic effect due to the axial magnetic field B 5.
Authors:
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
Publication Date:
Grant/Contract Number:
AC02-05CH11231; 653846
Type:
Accepted Manuscript
Journal Name:
2D Materials
Additional Journal Information:
Journal Volume: 5; Journal Issue: 2; Journal ID: ISSN 2053-1583
Publisher:
IOP Publishing
Research Org:
Lawrence Berkeley National Lab. (LBNL), Berkeley, CA (United States)
Sponsoring Org:
USDOE Office of Science (SC), Basic Energy Sciences (BES) (SC-22)
Country of Publication:
United States
Language:
English
Subject:
36 MATERIALS SCIENCE; semiclassics; gauge fields; Weyl semimetals; optical lattice; wavepacket; Hall effect
OSTI Identifier:
1461128