Theoretical Design of Topological Heteronanotubes

ORAL

Abstract

We propose and investigate the idea of topological heteronanotubes (THTs) for realizing a one-dimensional (1D) topological material platform that can pave the way to low-power carbon nanoelectronics at room temperature. We predict that the coaxial double-wall heteronanotube, a carbon nanotube (CNT) inside a boron nitride nanotube (BNNT), can act as a THT. Dissipationless topological conducting pathways on the THT are protected by a valley-dependent topological invariance that originates from local topological phase transitions of the CNT modulated by the CNT-BNNT interaction. Spiral THTs, where topological current flows spirally around the tube, function as nanoscale solenoids to induce remarkable magnetic fields due to the dense moire nanopatterning.

*This work is financially supported by Natural Science and Engineering Research Council (NSERC) of Canada, and the Fonds de recherche du Québec - Nature et technologies (FRQNT) of the Province of Quebec (H.G.). We thank Compute Canada and the High Performance Computing Center of McGill University for substantial computational support.

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Presenters

  • Chen Hu

    • McGill Univ

Authors

  • Chen Hu

    • McGill Univ

  • Vincent Michaud-Rioux

    • McGill Univ

  • Wang Yao

    • University of Hong Kong
    • The University of Hong Kong
    • Department of Physics and Centre of Theoretical and Computational Physics, University of Hong Kong, Hong Kong, China

  • Hong Guo

    • McGill Univ
    • Department of Physics, 3600 University, McGill University, Montreal, Quebec H3A 2T8, Canada
    • Physics, McGill University