Coexistence of Type-I and Type-II Weyl Points in the Weyl-Semimetal OsC2
Sign Up to like & getrecommendations! Published in 2018 at "Journal of Physical Chemistry C"
DOI: 10.1021/acs.jpcc.8b00920
Abstract: The topologically nontrivial Weyl semimetals have two different types: (i) the standard Weyl cones with point-like Fermi surfaces (type-I) and (ii) tilted Weyl cones that appear at the contact of electron and hole pockets (type-II).… read more here.
Keywords: weyl; weyl points; type; coexistence type ... See more keywords
Observation of quadratic Weyl points and double-helicoid arcs
Sign Up to like & getrecommendations! Published in 2020 at "Nature Communications"
DOI: 10.1038/s41467-020-15825-5
Abstract: Novel quasiparticles beyond those mimicking the elementary high-energy particles such as Dirac and Weyl fermions have attracted great interest in condensed-matter physics and materials science. Here we report an experimental observation of the long-desired quadratic… read more here.
Keywords: weyl; quadratic weyl; observation quadratic; arcs ... See more keywords
Photonic Weyl points due to broken time-reversal symmetry in magnetized semiconductor
Sign Up to like & getrecommendations! Published in 2019 at "Nature Physics"
DOI: 10.1038/s41567-019-0612-7
Abstract: Weyl points are discrete locations in the three-dimensional momentum space where two bands cross linearly with each other. They serve as the monopoles of Berry curvature in the momentum space, and their existence requires breaking… read more here.
Keywords: weyl; reversal symmetry; photonic weyl; time reversal ... See more keywords
Analysis of Dirac and Weyl points in topological semimetals via oscillation effects
Sign Up to like & getrecommendations! Published in 2021 at "Low Temperature Physics"
DOI: 10.1063/10.0003743
Abstract: We calculate the extremal cross-sectional areas and cyclotron masses for the Fermi-surface pockets in Dirac and Weyl topological semimetals. The calculation is carried out for the most general form of the electron energy bands in… read more here.
Keywords: weyl points; topological semimetals; analysis dirac; dirac weyl ... See more keywords
Ideal type-II Weyl points in topological circuits
Sign Up to like & getrecommendations! Published in 2021 at "National Science Review"
DOI: 10.1093/nsr/nwaa192
Abstract: Abstract Weyl points (WPs), nodal degenerate points in three-dimensional (3D) momentum space, are said to be ‘ideal’ if they are symmetry-related and well-separated, and reside at the same energy and far from nontopological bands. Although… read more here.
Keywords: type wps; points topological; weyl points; type weyl ... 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
Realizing type-II Weyl points in an optical lattice
Sign Up to like & getrecommendations! Published in 2017 at "Physical Review B"
DOI: 10.1103/physrevb.95.014306
Abstract: The recent discovery of the Lorentz symmetry-violating 'Type II' Weyl semimetal phase has renewed interest in the study of Weyl physics in condensed matter systems. However, tuning the exceptional properties of this novel state has… read more here.
Keywords: optical lattice; realizing type; weyl points; type weyl ... See more keywords
Floquet multi-Weyl points in crossing-nodal-line semimetals
Sign Up to like & getrecommendations! Published in 2017 at "Physical Review B"
DOI: 10.1103/physrevb.96.041206
Abstract: Weyl points with monopole charge $\ifmmode\pm\else\textpm\fi{}1$ have been extensively studied; however, real materials of multi-Weyl points, whose monopole charges are higher than 1, have yet to be found. In this Rapid Communication, we show that… read more here.
Keywords: multi weyl; line; line semimetals; nodal line ... See more keywords
Large nonsaturating magnetoresistance and pressure-induced phase transition in the layered semimetal HfTe 2
Sign Up to like & getrecommendations! Published in 2017 at "Physical Review B"
DOI: 10.1103/physrevb.96.205148
Abstract: Unusual physical properties like large magnetoresistance (MR) and superconductivity occurring in semimetals with Dirac or Weyl points are often linked to their topologically nontrivial band structures. However, there is an increasing number of reports on… read more here.
Keywords: transition; magnetoresistance; mathrm; weyl points ... See more keywords
Weyl points created by a three-dimensional flat band
Sign Up to like & getrecommendations! Published in 2019 at "Physical Review B"
DOI: 10.1103/physrevb.99.201105
Abstract: Following the discovery of topological insulators (TIs), topological Dirac/Weyl semimetal has attracted much recent interest. A prevailing mechanism for the formation of Weyl points is by breaking time-reversal symmetry (TRS) or spatial inversion symmetry of… read more here.
Keywords: points created; weyl; created three; dimensional flat ... See more keywords
Ideal Weyl points and helicoid surface states in artificial photonic crystal structures
Sign Up to like & getrecommendations! Published in 2018 at "Science"
DOI: 10.1126/science.aaq1221
Abstract: Exploring photonic topology Scattering topological effects are being explored in a variety of electronic and optical materials systems owing to their robustness against defects (see the Perspective by Özdemir). Yang et al. designed and fabricated… read more here.
Keywords: weyl points; ideal weyl; surface states; system ... See more keywords