Results 11 to 20 of about 9,692 (194)
Physical Review B, 2016 We construct a tight-binding model realizing one pair of Weyl nodes and three distinct Weyl semimetals. In the type-I (type-II) Weyl semimetal, both nodes belong to type-I (type-II) Weyl nodes.
Chen, Gang +5 more
core +6 more sources
Nature, 2015 Fermions in nature come in several types: Dirac, Majorana and Weyl are theoretically thought to form a complete list. Even though Majorana and Weyl fermions have for decades remained experimentally elusive, condensed matter has recently emerged as fertile ground for their discovery as low energy excitations of realistic materials.
Soluyanov, Alexey A. +6 more
openaire +6 more sources
A Weyl-Z 2 semimetal from holography [PDF]
Journal of High Energy Physics, 2021 We present effective field theories for the weakly coupled Weyl-Z 2 semimetal, as well as the holographic realization for the strongly coupled case.
Xuanting Ji +3 more
doaj +3 more sources
Experimental Discovery of Weyl Semimetal TaAs
Physical Review X, 2015 Weyl semimetals are a class of materials that can be regarded as three-dimensional analogs of graphene upon breaking time-reversal or inversion symmetry.
B. Q. Lv +13 more
doaj +2 more sources
From Nodal Chain Semimetal to Weyl Semimetal in HfC [PDF]
Physical Review Letters, 2017 Based on first-principles calculations and effective model analysis, we propose that the WC-type HfC, in the absence of spin-orbit coupling (SOC), can host a three-dimensional nodal chain semimetal state. Distinguished from the previous material IrF4 [T.
Yu, Rui +3 more
openaire +5 more sources
Observation of the Chiral-Anomaly-Induced Negative Magnetoresistance in 3D Weyl Semimetal TaAs
Physical Review X, 2015 Weyl semimetal is the three-dimensional analog of graphene. According to quantum field theory, the appearance of Weyl points near the Fermi level will cause novel transport phenomena related to chiral anomaly.
Xiaochun Huang +11 more
doaj +2 more sources
Square-root higher-order Weyl semimetals
Nature Communications, 2022 The topological properties of square-root Weyl semimetals are derived from the square of the Hamiltonian. Here, the authors propose a tight-binding model for a square-root higher-order Weyl semimetal hosting both Fermi-arc surface and hinge states.
Lingling Song +3 more
doaj +4 more sources
Hydrodynamic modes of holographic Weyl semimetals
Physics Letters BWe study the quasinormal modes of a holographic model of a Weyl semimetal. The model features quantum phase transition between a topological phase and a trivial phase. We put particular emphasis on the hydrodynamic modes and show that a hydrodynamic mode
Nishal Rai, Karl Landsteiner
doaj +4 more sources
Higher-Order Weyl Semimetals [PDF]
Physical Review Letters, 2020 We investigate higher-order Weyl semimetals (HOWSMs) having bulk Weyl nodes attached to both surface and hinge Fermi arcs. We identify a new type of Weyl node, that we dub a $2nd$ order Weyl node, that can be identified as a transition in momentum space in which both the Chern number and a higher order topological invariant change.
Sayed Ali Akbar Ghorashi +2 more
openaire +7 more sources
Global Phase Diagram of Disordered Type-II Weyl Semimetals [PDF]
, 2017 With electron and hole pockets touching at the Weyl node, type-II Weyl semimetal is a newly proposed topological state distinct from its type-I cousin. We numerically study the localization effect for tilted type-I as well as type-II Weyl semimetals and ...
Brown, André EX (5398142) +11 more
core +3 more sources