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High-resolution studies of the Majorana atomic chain platform
Benjamin E. Feldman, Mallika T. Randeria, Jian Li +6
Ordered assemblies of magnetic atoms on the surface of conventional superconductors can be used to engineer topological superconducting phases and realize Majorana fermion quasipar…
Imaging electronic states on topological semimetals using scanning tunneling microscopy
Andras Gyenis, Hiroyuki Inoue, Sangjun Jeon +12
Following the intense studies on topological insulators, significant efforts have recently been devoted to the search for gapless topological systems. These materials not only broa…
Conetronics in 2D Metal-Organic Frameworks: Double Dirac Cones, Magnetic Half Dirac Cones and Quantum Anomalous Hall Effect
Menghao Wu, Zhijun Wang, Junwei Liu +8
Based on recently synthesized Ni3C12S12 class 2D metal-organic frameworks, we predict electronic properties of M3C12S12 and M3C12O12, where M is Zn, Cd, Hg, Be, or Mg with no M orb…
Experimental Discovery of the First Nonsymmorphic Topological Insulator KHgSb
J. -Z. Ma, C. -J. Yi, B. Q. Lv +11
Topological insulators (TIs) host novel states of quantum matter, distinguished from trivial insulators by the presence of nontrivial conducting boundary states connecting the vale…
Topological Insulators from Group Cohomology
A. Alexandradinata, Zhijun Wang, B. Andrei Bernevig
We classify insulators by generalized symmetries that combine space-time transformations with quasimomentum translations. Our group-cohomological classification generalizes the non…
The chiral anomaly factory: Creating Weyl fermions with a magnetic field
Jennifer Cano, Barry Bradlyn, Zhijun Wang +3
Weyl fermions can be created in materials with both time reversal and inversion symmetry by applying a magnetic field, as evidenced by recent measurements of anomalous negative mag…
Quasiparticle interference of the Fermi arcs and surface-bulk connectivity of a Weyl semimetal
Hiroyuki Inoue, Andras Gyenis, Zhijun Wang +6
Weyl semimetals host topologically protected surface states, with arced Fermi surface contours that are predicted to propagate through the bulk when their momentum matches that of…
Beyond Dirac and Weyl fermions: Unconventional quasiparticles in conventional crystals
Barry Bradlyn, Jennifer Cano, Zhijun Wang +4
In quantum field theory, we learn that fermions come in three varieties: Majorana, Weyl, and Dirac. Here we show that in solid state systems this classification is incomplete and f…
Time-Reversal-Breaking Weyl Fermions in Magnetic Heusler Alloys
Zhijun Wang, M. G. Vergniory, S. Kushwaha +6
Weyl fermions have recently been observed in several time-reversal-invariant semimetals and photonics materials with broken inversion symmetry. These systems are expected to have e…
The chiral anomaly and thermopower of Weyl fermions in the half-Heusler GdPtBi
Max Hirschberger, Satya Kushwaha, Zhijun Wang +5
The Dirac and Weyl semimetals are unusual materials in which the nodes of the bulk states are protected against gap formation by crystalline symmetry. The chiral anomaly~\cite{Adle…
Universal signatures of Fermi arcs in quasiparticle interference on the surface of Weyl semimetals
Stefanos Kourtis, Jian Li, Zhijun Wang +2
Weyl semimetals constitute a newly discovered class of three-dimensional topological materials with linear touchings of valence and conduction bands in the bulk. The most striking…