Weyl Points in Three-Dimensional Optical Lattices: Synthetic Magnetic Monopoles in Momentum Space
Author(s)
Lu, Ling; Ketterle, Wolfgang; Buljan, Hrvoje; Dubcek, Tena; Kennedy, Colin; Soljacic, Marin; ... Show more Show less
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We show that a Hamiltonian with Weyl points can be realized for ultracold atoms using laser-assisted tunneling in three-dimensional optical lattices. Weyl points are synthetic magnetic monopoles that exhibit a robust, three-dimensional linear dispersion, identical to the energy-momentum relation for relativistic Weyl fermions, which are not yet discovered in particle physics. Weyl semimetals are a promising new avenue in condensed matter physics due to their unusual properties such as the topologically protected “Fermi arc” surface states. However, experiments on Weyl points are highly elusive. We show that this elusive goal is well within experimental reach with an extension of techniques recently used in ultracold gases.
Date issued
2015-06Department
Massachusetts Institute of Technology. Institute for Soldier Nanotechnologies; Massachusetts Institute of Technology. Department of PhysicsJournal
Physical Review Letters
Publisher
American Physical Society
Citation
Dubcek, Tena, Colin J. Kennedy, Ling Lu, Wolfgang Ketterle, Marin Soljacic, and Hrvoje Buljan. “Weyl Points in Three-Dimensional Optical Lattices: Synthetic Magnetic Monopoles in Momentum Space.” Physical Review Letters 114, no. 22 (June 2015). © 2015 American Physical Society
Version: Final published version
ISSN
0031-9007
1079-7114