Evidence of higher-order topology in multilayer WTe2 from Josephson coupling through anisotropic hinge states
Sign Up to like & getrecommendations! Published in 2020 at "Nature Materials"
DOI: 10.1038/s41563-020-0721-9
Abstract: Td-WTe2 (non-centrosymmetric and orthorhombic), a type-II Weyl semimetal, is expected to have higher-order topological phases with topologically protected, helical one-dimensional hinge states when its Weyl points are annihilated. However, the detection of these hinge states… read more here.
Keywords: higher order; hinge; topology; wte2 ... See more keywords
Electric multipole moments, topological multipole moment pumping, and chiral hinge states in crystalline insulators
Sign Up to like & getrecommendations! Published in 2017 at "Physical Review B"
DOI: 10.1103/physrevb.96.245115
Abstract: We extend the theory of dipole moments in crystalline insulators to higher multipole moments. In this paper, we expand in great detail the theory presented in Ref. 1, and extend it to cover associated topological… read more here.
Keywords: crystalline insulators; multipole moments; chiral hinge; electric multipole ... See more keywords
Field-Tunable One-Sided Higher-Order Topological Hinge States in Dirac Semimetals.
Sign Up to like & getrecommendations! Published in 2021 at "Physical review letters"
DOI: 10.1103/physrevlett.127.066801
Abstract: Recently, higher-order topological matter and 3D quantum Hall effects have attracted a great amount of attention. The Fermi-arc mechanism of the 3D quantum Hall effect proposed to exist in Weyl semimetals is characterized by the… read more here.
Keywords: one sided; order topological; hinge; hinge states ... See more keywords
Higher-order topological insulators
Sign Up to like & getrecommendations! Published in 2018 at "Science Advances"
DOI: 10.1126/sciadv.aat0346
Abstract: A new class of materials that are insulating in the bulk and on surfaces but have conducting hinge channels is studied. Three-dimensional topological (crystalline) insulators are materials with an insulating bulk but conducting surface states… read more here.
Keywords: higher order; topological insulators; topology; hinge states ... See more keywords