Weyl fermions in a non-abelian gauge background and trace anomalies
Sign Up to like & getrecommendations! Published in 2019 at "Journal of High Energy Physics"
DOI: 10.1007/jhep10(2019)241
Abstract: A bstractWe study the trace and chiral anomalies of Weyl fermions in a non-abelian gauge background in four dimensions. Using a Pauli-Villars regularization we identify the trace anomaly, proving that it can be cast in… read more here.
Keywords: non abelian; weyl fermions; trace; abelian gauge ... See more keywords
Two Dimensional MOene: From Superconductors to Direct Semiconductors and Weyl Fermions.
Sign Up to like & getrecommendations! Published in 2022 at "Nano letters"
DOI: 10.1021/acs.nanolett.2c01914
Abstract: The number of semiconducting MXenes with direct band gaps is extremely low; thus, it is highly desirable to broaden the MXene family beyond carbides and nitrides to expand the palette of desired chemical and physical… read more here.
Keywords: two dimensional; dimensional moene; direct semiconductors; weyl fermions ... See more keywords
Evidence for magnetic Weyl fermions in a correlated metal.
Sign Up to like & getrecommendations! Published in 2017 at "Nature materials"
DOI: 10.1038/nmat4987
Abstract: Weyl fermions have been observed as three-dimensional, gapless topological excitations in weakly correlated, inversion-symmetry-breaking semimetals. However, their realization in spontaneously time-reversal-symmetry-breaking phases of strongly correlated materials has so far remained hypothetical. Here, we report experimental… read more here.
Keywords: evidence magnetic; weyl; fermions correlated; magnetic weyl ... See more keywords
Observation of Weyl fermions in a magnetic non-centrosymmetric crystal
Sign Up to like & getrecommendations! Published in 2020 at "Nature Communications"
DOI: 10.1038/s41467-020-16879-1
Abstract: The absence of inversion symmetry in non-centrosymmetric materials has a fundamental role in the emergence of a vast number of fascinating phenomena, like ferroelectricity, second harmonic generation, and Weyl fermions. The removal of time-reversal symmetry… read more here.
Keywords: centrosymmetric crystal; magnetic non; non centrosymmetric; spectroscopy ... See more keywords
On the gauge-invariant path-integral measure for the overlap Weyl fermions in 16 of SO(10)
Sign Up to like & getrecommendations! Published in 2019 at "Progress of Theoretical and Experimental Physics"
DOI: 10.1093/ptep/ptz115
Abstract: We consider the lattice formulation of SO(10) chiral gauge theory with left-handed Weyl fermions in the 16-dimensional spinor representation ($\underline{16}$) within the framework of the overlap fermion/Ginsparg–Wilson relation. We define a manifestly gauge-invariant path-integral measure… read more here.
Keywords: invariant path; field; measure; gauge invariant ... See more keywords
Neutron scattering off Weyl semimetals
Sign Up to like & getrecommendations! Published in 2020 at "Physical Review B"
DOI: 10.1103/physrevb.102.035122
Abstract: We present how to detect type-$1$ Weyl nodes in a material by inelastic neutron scattering. Such an experiment first of all allows one to determine the dispersion of the Weyl fermions. We extend the reasoning… read more here.
Keywords: weyl; neutron scattering; weyl fermions; weyl equation ... See more keywords
Fermiology and type-I superconductivity in the chiral superconductor NbGe2 with Kramers-Weyl fermions
Sign Up to like & getrecommendations! Published in 2020 at "Physical Review B"
DOI: 10.1103/physrevb.102.235144
Abstract: NbGe${}_{2}$ is a type-I full-gap bulk chiral superconductor with Kramers-Weyl fermions and an enhanced critical field from filamentary superconductivity. Quantum oscillations and first-principles calculations reveal two hole Fermi pockets centered around the Weyl $M$ point… read more here.
Keywords: chiral superconductor; fermiology type; kramers weyl; weyl fermions ... See more keywords
Room-Temperature Ferromagnetic Topological Phase in CrO$_{2}$: From Tripe Fermions to Weyl Fermions
Sign Up to like & getrecommendations! Published in 2017 at "Physical Review B"
DOI: 10.1103/physrevb.97.195157
Abstract: Ferromagnetic topological semimetals due to their band topology co-existing with intrinsic magnetization exerted important influences on early study of topological fermions. However, they have not been observed in experiments up to now. In this work,… read more here.
Keywords: phase; room temperature; cro; ferromagnetic topological ... See more keywords
Ferromagnetic Weyl Fermions in Two-Dimensional Layered Electride Gd_{2}C.
Sign Up to like & getrecommendations! Published in 2020 at "Physical review letters"
DOI: 10.1103/physrevlett.125.187203
Abstract: Recently, two-dimensional layered electrides have emerged as a new class of materials which possess anionic electrons in the interstitial spaces between cationic layers. Here, based on first-principles calculations, we discover a time-reversal-symmetry-breaking Weyl semimetal phase… read more here.
Keywords: dimensional layered; weyl fermions; ferromagnetic weyl; fermions two ... See more keywords