A family of all sp2-bonded carbon allotropes of topological semimetals with strain-robust nodal-lines
Sign Up to like & getrecommendations! Published in 2020 at "Journal of Materials Chemistry C"
DOI: 10.1039/c9tc05470g
Abstract: We report on a family of all-sp2 carbon allotropes constructed by interconnected screw dislocations with complementary chiralities through atomistic calculations. The carbon allotropes have lattice periodicities defined by the interspacing among screw dislocations and are… read more here.
Keywords: carbon; topological semimetals; nodal lines; family sp2 ... See more keywords
Two-dimensional Weyl points and nodal lines in pentagonal materials and their optical response.
Sign Up to like & getrecommendations! Published in 2021 at "Nanoscale"
DOI: 10.1039/d1nr00064k
Abstract: Two-dimensional pentagonal structures based on the Cairo tiling are the basis of a family of layered materials with appealing physical properties. In this work we present a theoretical study of the symmetry-based electronic and optical… read more here.
Keywords: pentagonal structures; points nodal; nodal lines; two dimensional ... See more keywords
Movable but unavoidable nodal lines through high-symmetry points in two-dimensional materials
Sign Up to like & getrecommendations! Published in 2023 at "Progress of Theoretical and Experimental Physics"
DOI: 10.1093/ptep/ptad050
Abstract: In two-dimensional materials electronic band contacts often give non-trivial contribution to materials topological properties. Besides band contacts at high-symmetry points (HSP) in the Brillouin zone (BZ), like those in graphene, there are nodal lines which… read more here.
Keywords: two dimensional; dimensional materials; high symmetry; symmetry points ... See more keywords
Classification of Weyl points and nodal lines based on magnetic point groups for spin- 12 quasiparticles
Sign Up to like & getrecommendations! Published in 2022 at "Physical Review B"
DOI: 10.1103/physrevb.105.115109
Abstract: Symmetry-protected topological semimetals are at the focus of solid-state research due to their unconventional properties, for example, regarding transport. By investigating local two-band Bloch Hamiltonians in the spin-1/2 basis for the 122 magnetic point groups,… read more here.
Keywords: magnetic point; classification; nodal lines; point groups ... See more keywords
Quadratic and cubic nodal lines stabilized by crystalline symmetry
Sign Up to like & getrecommendations! Published in 2019 at "Physical Review B"
DOI: 10.1103/physrevb.99.121106
Abstract: In electronic band structures, nodal lines may arise when two (or more) bands contact and form a one-dimensional manifold of degeneracy in the Brillouin zone. Around a nodal line, the dispersion for the energy difference… read more here.
Keywords: crystalline symmetry; cubic nodal; quadratic cubic; nodal lines ... See more keywords
Phononic Helical Nodal Lines with PT Protection in MoB_{2}.
Sign Up to like & getrecommendations! Published in 2019 at "Physical review letters"
DOI: 10.1103/physrevlett.123.245302
Abstract: While condensed matter systems host both fermionic and bosonic quasiparticles, reliably predicting and empirically verifying topological states is only mature for Fermionic electronic structures, leaving topological Bosonic excitations sporadically explored. This is unfortunate, as Bosonic… read more here.
Keywords: phononic helical; mob; nodal lines; lines protection ... See more keywords
Observation of Non-Abelian Charged Nodes Linking Nonadjacent Gaps.
Sign Up to like & getrecommendations! Published in 2022 at "Physical review letters"
DOI: 10.1103/physrevlett.129.263604
Abstract: Nodal links are special configurations of band degeneracies in the momentum space, where nodal line branches encircle each other. In PT symmetric systems, nodal lines can be topologically characterized using the eigenvector frame rotations along… read more here.
Keywords: nodal links; observation non; frame charges; non abelian ... See more keywords
Dirac nodal lines protected against spin-orbit interaction in IrO2
Sign Up to like & getrecommendations! Published in 2019 at "Physical Review Materials"
DOI: 10.1103/physrevmaterials.3.064205
Abstract: Author(s): Nelson, JN; Ruf, JP; Lee, Y; Zeledon, C; Kawasaki, JK; Moser, S; Jozwiak, C; Rotenberg, E; Bostwick, A; Schlom, DG; Shen, KM; Moreschini, L | Abstract: © 2019 American Physical Society. The interplay between… read more here.
Keywords: nodal lines; spin orbit; dirac nodal; lines protected ... See more keywords
Symmetry-enforced band crossings in trigonal materials: Accordion states and Weyl nodal lines
Sign Up to like & getrecommendations! Published in 2019 at "Physical Review Materials"
DOI: 10.1103/physrevmaterials.3.124204
Abstract: Nonsymmoprhic symmetries, such as screw rotations or glide reflections, can enforce band crossings within high-symmetry lines or planes of the Brillouin zone. When these band degeneracies are close to the Fermi energy, they can give… read more here.
Keywords: weyl nodal; crossings trigonal; band crossings; trigonal materials ... See more keywords
Modular Arithmetic with Nodal Lines: Drumhead Surface States in ZrSiTe
Sign Up to like & getrecommendations! Published in 2020 at "Physical Review X"
DOI: 10.1103/physrevx.10.011026
Abstract: We study the electronic structure of the nodal line semimetal ZrSiTe both experimentally and theoretically. We find two different surface states in ZrSiTe - topological drumhead surface states and trivial floating band surface states. Using… read more here.
Keywords: surface; states zrsite; nodal lines; surface states ... See more keywords