نتایج جستجو برای: dirac semimetal

تعداد نتایج: 20016  

Journal: :Physical review 2022

The recent discovery of higher-order topology has largely enriched the classification topological materials. Theoretical and experimental studies have unveiled various insulators that exhibit topologically protected corner or hinge states. More recently, been introduced to semimetals. Thus far, realistic models verifications on semimetals are still very limited. Here, we design demonstrate a th...

Journal: :Proceedings of the National Academy of Sciences of the United States of America 2011
David A Siegel Cheol-Hwan Park Choongyu Hwang Jack Deslippe Alexei V Fedorov Steven G Louie Alessandra Lanzara

The Landau-Fermi liquid picture for quasiparticles assumes that charge carriers are dressed by many-body interactions, forming one of the fundamental theories of solids. Whether this picture still holds for a semimetal such as graphene at the neutrality point, i.e., when the chemical potential coincides with the Dirac point energy, is one of the long-standing puzzles in this field. Here we pres...

Journal: :IOP Conference Series: Materials Science and Engineering 2019

Journal: :Nature communications 2016
Li-Xian Wang Cai-Zhen Li Da-Peng Yu Zhi-Min Liao

Three-dimensional Dirac semimetals, three-dimensional analogues of graphene, are unusual quantum materials with massless Dirac fermions, which can be further converted to Weyl fermions by breaking time reversal or inversion symmetry. Topological surface states with Fermi arcs are predicted on the surface and have been observed by angle-resolved photoemission spectroscopy experiments. Although t...

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