Weyl Points in Three-Dimensional Optical Lattices: Synthetic Magnetic Monopoles in Momentum Space
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PhysRevLett.114.225301.pdf
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Author(s)
Lu, Ling
Ketterle, Wolfgang
Buljan, Hrvoje
Dubcek, Tena
Kennedy, Colin
Soljacic, Marin
Date Issued
June 2015
Journal
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
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Final published version
Abstract
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.
MIT Department
Massachusetts Institute of Technology. Institute for Soldier Nanotechnologies
Massachusetts Institute of Technology. Department of Physics
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DOI of Published Version
https://doi.org/10.1103/PhysRevLett.114.225301
