Results 11 to 20 of about 1,496 (181)
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
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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
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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
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How massless are Weyl fermions in Weyl semimetals
Physical Review B, 2023 12 pages, 6 ...
Amar Bharti, Misha Ivanov, Gopal Dixit
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Magnetic impurity in a Weyl semimetal [PDF]
Physical Review B, 2015 8 pages, 5 ...
Sun, Jinhua +3 more
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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
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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.
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Emission of Photons by Quasiparticles in Weyl Semimetals [PDF]
Symmetry, 2020 We show that quasiparticles in Weyl semimetals may decay with emission of a single photon. We study the spectrum of emitted photons and estimate the decay rates.
Andrianov, Alexander +2 more
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On Weyl Nodes in Ferromagnetic Weyl Semimetal
Acta Physica Polonica A, 2023 The ferromagnetic Weyl semimetals, such as Co3Sn2S2, feature pairs of Weyl points characterized by the opposite chiralities.We model this type of semimetals by the inversion symmetry protected and the time reversal symmetry broken Bloch Hamiltonian. It involves terms representing the tunnelling effect, exchange field corresponding to the ferromagnetic ...
Tyagi, Udai Prakash, Goswami, Partha
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