Edge disorder in bottom-up zigzag graphene nanoribbons: implications for magnetism and quantum electronic transport


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{
  "metadata": {
    "is_last": true, 
    "publication_date": "Nov 03, 2021, 14:40:48", 
    "edited_by": 100, 
    "version": 1, 
    "license": "Creative Commons Attribution 4.0 International", 
    "license_addendum": null, 
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    "mcid": "2021.187", 
    "keywords": [
      "graphene nanoribbons", 
      "GNR", 
      "electronic transport", 
      "magnetism", 
      "defects", 
      "SNSF", 
      "MARVEL", 
      "CSCS", 
      "Graphene flagship core 3", 
      "ONR"
    ], 
    "contributors": [
      {
        "givennames": "Michele", 
        "email": "mpizzochero@g.harvard.edu", 
        "familyname": "Pizzochero", 
        "affiliations": [
          "Institute of Physics, \u00c9cole Polytechnique F\u00e9d\u00e9rale de Lausanne (EPFL), CH-1015 Lausanne, Switzerland", 
          "National Centre for Computational Design and Discovery of Novel Materials (MARVEL), \u00c9cole Polytechnique F\u00e9d\u00e9rale de Lausanne (EPFL), CH-1015 Lausanne, Switzerland", 
          "School of Engineering and Applied Sciences, Harvard University, Cambridge, Massachusetts 02138, United States"
        ]
      }, 
      {
        "givennames": "Gabriela", 
        "familyname": "Borin Barin", 
        "affiliations": [
          "Nanotech@Surfaces Laboratory, Swiss Federal Laboratories for Materials Science and Technology (EMPA), CH-8600 Du\u0308bendorf, Switzerland"
        ]
      }, 
      {
        "givennames": "Kristi\u0101ns", 
        "familyname": "\u010cer\u0146evi\u010ds", 
        "affiliations": [
          "Institute of Physics, \u00c9cole Polytechnique F\u00e9d\u00e9rale de Lausanne (EPFL), CH-1015 Lausanne, Switzerland", 
          "National Centre for Computational Design and Discovery of Novel Materials (MARVEL), \u00c9cole Polytechnique F\u00e9d\u00e9rale de Lausanne (EPFL), CH-1015 Lausanne, Switzerland"
        ]
      }, 
      {
        "givennames": "Shiyong", 
        "familyname": "Wang", 
        "affiliations": [
          "Nanotech@Surfaces Laboratory, Swiss Federal Laboratories for Materials Science and Technology (EMPA), CH-8600 Du\u0308bendorf, Switzerland"
        ]
      }, 
      {
        "givennames": "Pascal", 
        "familyname": "Ruffieux", 
        "affiliations": [
          "Nanotech@Surfaces Laboratory, Swiss Federal Laboratories for Materials Science and Technology (EMPA), CH-8600 Du\u0308bendorf, Switzerland"
        ]
      }, 
      {
        "givennames": "Roman", 
        "familyname": "Fasel", 
        "affiliations": [
          "Nanotech@Surfaces Laboratory, Swiss Federal Laboratories for Materials Science and Technology (EMPA), CH-8600 Du\u0308bendorf, Switzerland", 
          "Department of Chemistry, Biochemistry and Pharmaceutical Sciences, University of Bern, CH-3012 Bern, Switzerland"
        ]
      }, 
      {
        "givennames": "Oleg V.", 
        "familyname": "Yazyev", 
        "affiliations": [
          "Institute of Physics, \u00c9cole Polytechnique F\u00e9d\u00e9rale de Lausanne (EPFL), CH-1015 Lausanne, Switzerland", 
          "National Centre for Computational Design and Discovery of Novel Materials (MARVEL), \u00c9cole Polytechnique F\u00e9d\u00e9rale de Lausanne (EPFL), CH-1015 Lausanne, Switzerland"
        ]
      }
    ], 
    "status": "published", 
    "doi": "10.24435/materialscloud:xf-r3", 
    "title": "Edge disorder in bottom-up zigzag graphene nanoribbons: implications for magnetism and quantum electronic transport", 
    "id": "1104", 
    "description": "We unveil the nature of the structural disorder in bottom-up zigzag graphene nanoribbons along with its effect on the magnetism and electronic transport on the basis of scanning probe microscopies and first-principles calculations. We find that edge-missing m-xylene units emerging during the cyclodehydrogenation step of the on-surface synthesis are the most common point defects. These \u201cbite\u201d defects act as spin-1 paramagnetic centers, severely disrupt the conductance spectrum around the band extrema, and give rise to spin-polarized charge transport. We further show that the electronic conductance across graphene nanoribbons is more sensitive to \u201cbite\u201d defects forming at the zigzag edges than at the armchair ones. Our work establishes a comprehensive understanding of the low-energy electronic properties of disordered bottom-up graphene nanoribbons.", 
    "owner": 129, 
    "_oai": {
      "id": "oai:materialscloud.org:1104"
    }, 
    "conceptrecid": "1103", 
    "references": [
      {
        "doi": "10.1021/acs.jpclett.1c00921", 
        "url": "https://pubs.acs.org/doi/10.1021/acs.jpclett.1c00921", 
        "comment": "Paper in which the data is discussed", 
        "citation": "M. Pizzochero, G. Borin Barin, K. C\u030cern\u0327evi\u010ds, S. Wang, P. Ruffieux, R. Fasel, O. V. Yazyev , J. Phys. Chem. Lett. 12, 4692\u22124696 (2021)", 
        "type": "Journal reference"
      }
    ]
  }, 
  "updated": "2021-11-03T13:40:48.884417+00:00", 
  "revision": 4, 
  "id": "1104", 
  "created": "2021-11-01T14:12:55.796641+00:00"
}