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Three-component fermions with surface Fermi arcs in topological semimetal tungsten carbide
J. -Z. Ma, J. -B. He, Y. -F. Xu +19
Topological Dirac and Weyl semimetals not only host quasiparticles analogous to the elementary fermionic particles in high-energy physics, but also have nontrivial band topology ma…
Robustness of topological states to lattice instability in non-symmorphic topological insulator KHgSb
D. Chen, T. T. Zhang, C. J. Yi +8
We report a polarized Raman scattering study of non-symmorphic topological insulator KHgSb with hourglass-like electronic dispersion. Supported by theoretical calculations, we show…
Experimental Observation of Three-Component 'New Fermions' in Topological Semimetal MoP
B. Q. Lv, Z. -L. Feng, Q. -N. Xu +10
Condensed matter systems can host quasiparticle excitations that are analogues to elementary particles such as Majorana, Weyl, and Dirac fermions. Recent advances in band theory ha…
Observation of Dirac-like band dispersion in LaAgSb
X. Shi, P. Richard, Kefeng Wang +10
We present a combined angle-resolved photoemission spectroscopy (ARPES) and first-principles calculations study of the electronic structure of LaAgSb in the entire first Brillo…
Raman study of lattice dynamics in Weyl semimetal TaAs
H. W. Liu, P. Richard, Z. D. Song +4
We report a polarized Raman study of Weyl semimetal TaAs. We observe all the optical phonons, with energies and symmetries consistent with our first-principles calculations. We det…
Raman scattering investigation of large positive magnetoresistance material WTe
W. -D. Kong, S. -F. Wu, P. Richard +5
We have performed polarized Raman scattering measurements on WTe, for which an extremely large positive magnetoresistance has been reported recently. We observe 5 A phonon…
Experimental discovery of Weyl semimetal TaAs
B. Q. Lv, H. M. Weng, B. B. Fu +11
Weyl semimetals are a class of materials that can be regarded as three-dimensional analogs of graphene breaking time reversal or inversion symmetry. Electrons in a Weyl semimetal b…