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

Roy, Sthitadhi; Kolodrubetz, Michael; Goldman, Nathan; Grushin, Adolfo G.

doi:10.1088/2053-1583/aaa577

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

Journal Article · 19 January 2018 · 2D Materials

DOI: https://doi.org/10.1088/2053-1583/aaa577 · OSTI ID:1461128

^[1]; Kolodrubetz, Michael ^[2]; Goldman, Nathan ^[3];

^[4]

Max-Planck-Inst. fur Physik komplexer Systeme, Dresden (Germany)
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)
Univ. Libre de Bruxelles, Brussels (Belgium). Center for Nonlinear Phenomena and Complex Systems
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.

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Research Organization:: Lawrence Berkeley National Laboratory (LBNL), Berkeley, CA (United States)

Sponsoring Organization:: USDOE Office of Science (SC), Basic Energy Sciences (BES)

Grant/Contract Number:: AC02-05CH11231; 653846

OSTI ID:: 1461128

Journal Information:: 2D Materials, Vol. 5, Issue 2; ISSN 2053-1583

Publisher:: IOP PublishingCopyright Statement

Country of Publication:: United States

Language:: English

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Cited by: 28 works

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