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14 papers · 2 filters
Topological bands and triply-degenerate points in non-Hermitian hyperbolic metamaterials
Junpeng Hou, Zhitong Li, Xi-Wang Luo +2
Hyperbolic metamaterials (HMMs), an unusual class of electromagnetic metamaterials, have found important applications in various fields due to their distinctive properties. A surpr…
Observation of acoustic Landau quantization and quantum-Hall-like edge states
Xinhua Wen, Chunyin Qiu, Yajuan Qi +4
Many intriguing phenomena occur for electrons under strong magnetic fields. Recently, it was proposed that an appropriate strain texture in graphene can induce a synthetic gauge fi…
Theoretical study of scattering in graphene ribbons in the presence of structural and atomistic edge roughness
Kristof Moors, Antonino Contino, Maarten L. Van de Put +4
We investigate the diffusive electron-transport properties of charge-doped graphene ribbons and nanoribbons with imperfect edges. We consider different regimes of edge scattering,…
Landau levels, Bardeen polynomials and Fermi arcs in Weyl semimetals: the who's who of the chiral anomaly
Jan Behrends, Sthitadhi Roy, Michael H. Kolodrubetz +2
Condensed matter systems realizing Weyl fermions exhibit striking phenomenology derived from their topologically protected surface states as well as chiral anomalies induced by ele…
Skyrmion Logic System for Large-Scale Reversible Computation
Maverick Chauwin, Xuan Hu, Felipe Garcia-Sanchez +4
Computational reversibility is necessary for quantum computation and inspires the development of computing systems in which information carriers are conserved as they flow through…
Intrinsic valley Hall transport in atomically thin MoS2
Zefei Wu, Benjamin T. Zhou, Gui-Bin Liu +10
Electrons hopping in two-dimensional honeycomb lattices possess a valley degree of freedom in addition to charge and spin. In the absence of inversion symmetry, these systems were…
Topological valleytronics: Brought to light
Fan Zhang
The topological valley Hall effect was predicted as a consequence of the bulk topology of electronic systems. Now it has been observed in photonic crystals, showing that both topol…
High-Temperature Majorana Corner States
Qiyue Wang, Cheng-Cheng Liu, Yuan-Ming Lu +1
Majorana bound states often occur at the end of 1D topological superconductor or at the Josephson junction mediated by a helical edge state. Validated by a new bulk invariant a…
Probing Landau levels of strongly interacting massive Dirac electrons in layer-polarized MoS
Jiangxiazi Lin, Tianyi Han, Benjamin A. Piot +10
Monolayer transition metal dichalcogenides are recently emerged 2D electronic systems with various novel properties, such as spin-valley locking, circular dichroism, valley Hall ef…
Valley Topological Phases in Bilayer Sonic Crystals
Jiuyang Lu, Chunyin Qiu, Weiyin Deng +5
Recently, the topological physics in artificial crystals for classical waves has become an emerging research area. In this Letter, we propose a unique bilayer design of sonic cryst…
Quantum-Confined Electronic States arising from Moiré Pattern of MoS2-WSe2 Hetero-bilayers
Yi Pan, Stefan Fölsch, Yifan Nie +7
A two-dimensional (2D) hetero-bilayer system consisting of MoS2 on WSe2, deposited on epitaxial graphene, is studied by scanning tunneling microscopy and spectroscopy at temperatur…
An envelope function formalism for lattice-matched heterostructures
Maarten L. Van de Put, William G. Vandenberghe, Wim Magnus +1
The envelope function method traditionally employs a single basis set which, in practice, relates to a single material because the matrix elements are generally only kno…
Theoretical studies of electronic transport in mono- and bi-layer phosphorene: A critical overview
Gautam Gaddemane, William G. Vandenberghe, Maarten L. Van de Put +4
Recent theoretical calculations of the electrical performance of several two-dimensional materials predict a low-field carrier mobility that spans several orde…
Magnitude of the Current in Two-Dimensional Interlayer Tunneling Devices
Randall M. Feenstra, Sergio C. de la Barrera, Jun Li +2
Using the Bardeen tunneling method with first-principles wave functions, computations are made of the tunneling current in graphene / hexagonal-boron-nitride / graphene (G/h-BN/G)…