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Anisotropic physical properties and pressure dependent magnetic ordering of CrAuTe
Na Hyun Jo, Udhara S. Kaluarachchi, Yun Wu +6
Systematic measurements of temperature dependent magnetization, resistivity and angle-resolved photoemission spectroscopy (ARPES) at ambient pressure as well as resistivity under p…
Measuring Chern numbers above the Fermi level in the Type II Weyl semimetal MoWTe
Ilya Belopolski, Su-Yang Xu, Yukiaki Ishida +30
It has recently been proposed that electronic band structures in crystals give rise to a previously overlooked type of Weyl fermion, which violates Lorentz invariance and, conseque…
Observation of Fermi Arcs in Type-II Weyl Semimetal Candidate WTe2
Yun Wu, Na Hyun Jo, Daixiang Mou +4
We use ultrahigh resolution, tunable, vacuum ultraviolet laser angle-resolved photoemission spectroscopy (ARPES) to study the electronic properties of WTe, a material that was…
Asymmetric mass acquisition in LaBi - a new topological semimetal candidate
Yun Wu, Tai Kong, Lin-Lin Wang +7
We use our high resolution He-lamp based, tunable laser-based ARPES measurements and density functional theory calculations to study the electronic properties of LaBi, a binary sys…
Spectroscopic evidence for type II Weyl semimetal state in MoTe2
Lunan Huang, Timothy M. McCormick, Masayuki Ochi +9
In a type I Dirac or Weyl semimetal, the low energy states are squeezed to a single point in momentum space when the chemical potential Ef is tuned precisely to the Dirac/Weyl poin…
Discovery of Dirac Node Arcs in PtSn4
Yun Wu, Lin-Lin Wang, Eundeok Mun +7
In topological quantum materials the conduction and valence bands are connected at points (Dirac/Weyl semimetals) or along lines (Line Node semimetals) in the momentum space. Numbe…
Isotope Effect on Electron-Phonon Interaction in Multiband Superconductor MgB2
Daixiang Mou, Soham Manni, Valentin Taufour +5
We investigate the effect of isotope substitution on the electron-phonon interaction in the multi-band superconductor MgB2 using tunable laser based Angle Resolved Photoemission Sp…