Results 21 to 30 of about 3,435 (211)
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
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 +5 more sources
How massless are Weyl fermions in Weyl semimetals
Physical Review B, 2023 12 pages, 6 ...
Amar Bharti, Misha Ivanov, Gopal Dixit
openaire +2 more sources
Lasing with Topological Weyl Semimetal [PDF]
Scientific Reports, 2020 AbstractLasing behavior of optically active planar topological Weyl semimetal (TWS) is investigated in view of the Kerr and Faraday rotations. Robust topological character of TWS is revealed by the presence of Weyl nodes and relevant surface conductivities.
Oktay, Güneş +2 more
openaire +3 more sources
Electromagnetic Response of Weyl Semimetals [PDF]
Physical Review Letters, 2013 4 pages + 4 figures. v2: version to appear in PRL (argument for vanishing equilibrium current elaborated, references updated)
Vazifeh, M. M., Franz, M.
openaire +3 more sources
Asymmetrical plasmonic absorber and reflector based on tilted Weyl semimetals
Scientific Reports, 2021 We investigate the surface plasmon polariton dispersion and optical spectra of a thin film of tilted Weyl semimetal. Tilted Weyl semimetals possess tilted Weyl cones at the Weyl nodes and are categorized to type-I with closed Fermi surfaces and type-II ...
Somayeh Oskoui Abdol +1 more
doaj +1 more source
Photocurrent in gyrotropic Weyl semimetals [PDF]
JETP Letters, 2017 We present results of a theoretical study of photocurrents in the Weyl semimetals belonging to the gyrotropic symmetry classes. We show that, in weakly gyrotropic symmetry classes C$_{nv}$ ($n = 3,4,6$), the circular photocurrent transverse to the incidence direction appears only with account, in the electron effective Hamiltonian, for both linear and ...
Golub, L. E. +2 more
openaire +2 more sources
Negative Refraction in Weyl Semimetals [PDF]
Journal of the Physical Society of Japan, 2017 We theoretically propose that Weyl semimetals may exhibit negative refraction at some frequencies close to the plasmon frequency, allowing transverse magnetic (TM) electromagnetic waves with frequencies smaller than the plasmon frequency to propagate in the Weyl semimetals.
Ukhtary, M. Shoufie +2 more
openaire +2 more sources
Acoustogalvanic Effect in Dirac and Weyl Semimetals [PDF]
Physical Review Letters, 2020 6+14 pages, 3+3 multi-panel figures; published ...
Sukhachov, P. O., Rostami, H.
openaire +3 more sources
Dirac-Weyl semimetal in photonic metacrystals
, 2023 Dirac-Weyl semimetal is a novel type of topological phase that features the coexistence of Dirac and Weyl points in momentum space. In this study, a photonic Dirac-Weyl semimetal is proposed by introducing screw rotation sym-metries into a spatial ...
Long, S +8 more
core +1 more source