Classification of Dirac points with higher-order Fermi arcs
نویسندگان
چکیده
Dirac semimetals lack stable surface Fermi arcs. However, they can exhibit a bulk-hinge correspondence: when terminated in rod geometry, zero energy arclike states appear on the hinges connecting projections of bulk points. In this work, authors derive symmetry indicators that determine existence higher-order arcs for general groups. The results show points with linear dispersion all directions always arcs, while quadratic two do not.
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ژورنال
عنوان ژورنال: Physical review
سال: 2021
ISSN: ['0556-2813', '1538-4497', '1089-490X']
DOI: https://doi.org/10.1103/physrevb.104.245101