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Unoccupied electronic structure and signatures of topological Fermi arcs in the Weyl semimetal candidate MoWTe
Ilya Belopolski, Su-Yang Xu, Yukiaki Ishida +30
Weyl semimetals have sparked intense research interest, but experimental work has been limited to the TaAs family of compounds. Recently, a number of theoretical works have predict…
A strongly robust Weyl fermion semimetal state in TaS
Guoqing Chang, Su-Yang Xu, Daniel S. Sanchez +11
Weyl semimetals are extremely interesting. Although the first Weyl semimetal was recently discovered in TaAs, research progress is still significantly hindered due to the lack of r…
Single crystal growth and physical property characterization of PbTaSe2 as a noncentrosymmetric type-II superconductor
Raman Sankar, G. Narsinga Rao, I. Panneer Muthuselvam +11
The single crystal growth and superconducting properties of PbTaSe2 with non-centrosymmetric crystal structure is reported. Using the chemical vapor transport (CVT) technique, PbTa…
Quasi-particle interferences of the Weyl semimetals TaAs and NbP
Guoqing Chang, Su-Yang Xu, Hao Zheng +12
The recent discovery of the first Weyl semimetal in TaAs provides the first observation of a Weyl fermion in nature. Such a topological semimetal features a novel type of anomalous…
Engineering electronic structure of a 2D topological insulator Bi(111) bilayer on Sb nanofilms by quantum confinement effect
Guang Bian, Z. F. Wang, Xiaoxiong Wang +6
We report on fabrication of a two-dimensional topological insulator-Bi(111) bilayer on Sb nanofilms via a sequential molecular beam epitaxy (MBE) growth technique. Our angle-resolv…
Experimental Observation of Two Massless Dirac-Fermion Gases in Graphene-Topological Insulator Heterostructure
Guang Bian, Ting-Fung Chung, Chang Liu +19
Graphene and topological insulators (TI) possess two-dimensional Dirac fermions with distinct physical properties. Integrating these two Dirac materials in a single device creates…