Controlling the quantum spin Hall edge states in two-dimensional transition metal dichalcogenides


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{
  "id": "675", 
  "metadata": {
    "title": "Controlling the quantum spin Hall edge states in two-dimensional transition metal dichalcogenides", 
    "doi": "10.24435/materialscloud:cg-q0", 
    "license": "Creative Commons Attribution 4.0 International", 
    "keywords": [
      "transition metal dichalcogenides", 
      "quantum spin Hall effect", 
      "edge states", 
      "topological insulators", 
      "2D materials", 
      "SNSF", 
      "MARVEL", 
      "ERC", 
      "EPFL"
    ], 
    "contributors": [
      {
        "affiliations": [
          "Institute of Physics, Ecole Polytechnique F\u00e9d\u00e9rale de Lausanne (EPFL), CH-1015 Lausanne, Switzerland"
        ], 
        "familyname": "Pulkin", 
        "email": "gpulkin@gmail.com", 
        "givennames": "Artem"
      }, 
      {
        "affiliations": [
          "Institute of Physics, Ecole Polytechnique F\u00e9d\u00e9rale de Lausanne (EPFL), CH-1015 Lausanne, Switzerland"
        ], 
        "familyname": "Yazyev", 
        "email": "oleg.yazyev@epfl.ch", 
        "givennames": "Oleg V."
      }
    ], 
    "_files": [
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        "checksum": "md5:84edd11a8283c2754ed46623eee29021", 
        "size": 3018605936, 
        "key": "data.tar.gz"
      }, 
      {
        "description": "readme file", 
        "checksum": "md5:acf8f49e1831f252eda8b82dc06e73a4", 
        "size": 3116, 
        "key": "README.md"
      }
    ], 
    "references": [
      {
        "type": "Journal reference", 
        "doi": "10.1021/acs.jpclett.0c00859", 
        "citation": "A. Pulkin, O. V. Yazyev, J. Phys. Chem. Lett. 11, 6964\u20136969 (2020)", 
        "url": "https://pubs.acs.org/doi/abs/10.1021/acs.jpclett.0c00859"
      }, 
      {
        "type": "Preprint", 
        "citation": "A. Pulkin, O. V. Yazyev, arXiv:1907.12481 (2019)", 
        "url": "https://arxiv.org/abs/1907.12481"
      }
    ], 
    "conceptrecid": "674", 
    "version": 1, 
    "edited_by": 100, 
    "id": "675", 
    "owner": 96, 
    "mcid": "2020.161", 
    "is_last": true, 
    "status": "published", 
    "description": "Two-dimensional transition metal dichalcogenides (TMDs) of Mo and W in their 1T\u2032 crystalline phase host the quantum spin Hall (QSH) insulator phase. We address the electronic properties of the QSH edge states by means of first-principles calculations performed on realistic models of edge terminations of different stoichiometries. The QSH edge states show a tendency to have complex band dispersions and coexist with topologically trivial edge states. We nevertheless identify two stable edge terminations that allow isolation of a pair of helical edge states within the band gap of TMDs, with monolayer 1T\u2032-WSe2 being the most promising material. We also characterize the finite-size effects in the electronic structure of 1T\u2032-WSe2 nanoribbons. Our results provide guidance to the experimental studies and possible practical applications of QSH edge states in monolayer 1T\u2032-TMDs.", 
    "license_addendum": null, 
    "_oai": {
      "id": "oai:materialscloud.org:675"
    }, 
    "publication_date": "Dec 06, 2020, 11:46:14"
  }, 
  "revision": 4, 
  "updated": "2020-12-06T10:46:14.835592+00:00", 
  "created": "2020-12-04T23:56:34.164883+00:00"
}