Publications related to Hermann Weyl

Topological Fermi-arc surface resonances in bcc iron

Oleg Yazyev, Daniel Gosalbez Martinez, Gabriel Albert Autes

The topological classification of matter has been extended to include semimetallic phases characterized by the presence of topologically protected band degeneracies. In Weyl semimetals, the foundational gapless topological phase, chiral degeneracies are is ...

AMER PHYSICAL SOC2020

The compass in the eye: The "geometric mechanics" of Viviani at the bedside of the Brunelleschi dome

Simon François Dumas Primbault

During the 17th century, being an engineer at the Medici Court was a discipline at the intersection of mathematics, and the pictorial and mechanical arts. Born out of the heritage of Alberti, Vinci, and Vasari, the Accademia del disegno - founded on the th ...

ARMAND COLIN2020

Weyl fermions, Fermi arcs, and minority-spin carriers in ferromagnetic CoS2

Thorsten Schmitt, Vladimir N. Strocov, Timur Kim, Samuel Thomas Stolz

Magnetic Weyl semimetals are a newly discovered class of topological materials that may serve as a platform for exotic phenomena, such as axion insulators or the quantum anomalous Hall effect. Here, we use angle-resolved photoelectron spectroscopy and ab i ...

2020

Observation of Weyl Nodes in Robust Type-II Weyl Semimetal WP2

Oleg Yazyev, Quansheng Wu, Joël Mesot, Gabriel Albert Autes

Distinct to type-I Weyl semimetals (WSMs) that host quasiparticles described by the Weyl equation, the energy dispersion of quasiparticles in type-II WSMs violates Lorentz invariance and the Weyl cones in the momentum space are tilted. Since it was propose ...

AMER PHYSICAL SOC2019

Colossal mid-infrared bulk photovoltaic effect in a type-I Weyl semimetal

Philip Johannes Walter Moll, Xiangwei Huang, Xu Yang

Broadband, efficient and fast conversion of light to electricity is crucial for sensing and clean energy. The bulk photovoltaic effect (BPVE) is a second-order nonlinear optical effect that intrinsically converts light into electrical current. Here, we dem ...

NATURE PUBLISHING GROUP2019

Spin fluctuation induced Weyl semimetal state in the paramagnetic phase of EuCd2As2

Joël Mesot

Weyl fermions as emergent quasiparticles can arise in Weyl semimetals (WSMs) in which the energy bands are nondegenerate, resulting from inversion or time-reversal symmetry breaking. Nevertheless, experimental evidence for magnetically induced WSMs is scar ...

American Association for the Advancement of Science (AAAS)2019

Weyl-type bounds for Steklov eigenvalues

Joachim Stubbe, Luigi Provenzano

We present upper and lower bounds for Steklov eigenvalues for domains in RN+1 with C-2 boundary compatible with the Weyl asymptotics. In particular, we obtain sharp upper bounds on Riesz-means and the trace of corresponding Steklov heat kernel. The key res ...

EUROPEAN MATHEMATICAL SOC2019

Fermion conformal bootstrap in 4d

Denis Karateev, Alessandro Vichi

We apply numerical conformal bootstrap techniques to the four-point function of a Weyl spinor in 4d non-supersymmetric CFTs. We find universal bounds on operator dimensions and OPE coefficients, including bounds on operators in mixed symmetry representatio ...

Springer2019

Quantum limit transport and destruction of the Weyl nodes in TaAs

Yi Zhang, Philip Johannes Walter Moll, Maja Deborah Bachmann

Weyl fermions are a recently discovered ingredient for correlated states of electronic matter. A key difficulty has been that real materials also contain non-Weyl quasiparticles, and disentangling the experimental signatures has proven challenging. Here we ...

2018

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Hermann Weyl

Topological Fermi-arc surface resonances in bcc iron

The compass in the eye: The "geometric mechanics" of Viviani at the bedside of the Brunelleschi dome

Weyl fermions, Fermi arcs, and minority-spin carriers in ferromagnetic CoS2

Time-reversal symmetry breaking type-II Weyl state in YbMnBi2

Observation of Weyl Nodes in Robust Type-II Weyl Semimetal WP2

Colossal mid-infrared bulk photovoltaic effect in a type-I Weyl semimetal

Spin fluctuation induced Weyl semimetal state in the paramagnetic phase of EuCd2As2

Weyl-type bounds for Steklov eigenvalues

Fermion conformal bootstrap in 4d

Quantum limit transport and destruction of the Weyl nodes in TaAs

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Chat with Graph Search

Observation of Weyl Nodes in Robust Type-II Weyl Semimetal WP2

Weyl fermions, Fermi arcs, and minority-spin carriers in ferromagnetic CoS2

Topological Fermi-arc surface resonances in bcc iron

The compass in the eye: The "geometric mechanics" of Viviani at the bedside of the Brunelleschi dome

Fermion conformal bootstrap in 4d

Time-reversal symmetry breaking type-II Weyl state in YbMnBi2

Weyl-type bounds for Steklov eigenvalues

Spin fluctuation induced Weyl semimetal state in the paramagnetic phase of EuCd2As2

Colossal mid-infrared bulk photovoltaic effect in a type-I Weyl semimetal

Quantum limit transport and destruction of the Weyl nodes in TaAs