Observation of quadruple Weyl point in hybrid-Weyl phononic crystals
نویسندگان
چکیده
Here we report the observation of quadruple Weyl point charge 4 in phononic crystals, highest topological a twofold degenerate node can carry. Besides point, semimetal also hosts conventional, quadratic, and spin-1 points, which stands as system with yet richest types points. The quadruple-helicoid surface states, specific to are demonstrated. finding high-charge enriches knowledge semimetals may stimulate related researches other systems, such photonic, mechanical, cold atom systems.
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ژورنال
عنوان ژورنال: Physical review
سال: 2022
ISSN: ['0556-2813', '1538-4497', '1089-490X']
DOI: https://doi.org/10.1103/physrevb.106.134108