Electric field tunable bandgap in twisted double trilayer graphene

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{
  "revision": 6, 
  "id": "2364", 
  "created": "2024-09-29T06:10:54.314609+00:00", 
  "metadata": {
    "doi": "10.24435/materialscloud:gq-6x", 
    "status": "published", 
    "title": "Electric field tunable bandgap in twisted double trilayer graphene", 
    "mcid": "2025.4", 
    "license_addendum": null, 
    "_files": [
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        "key": "README.txt", 
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    "owner": 1154, 
    "_oai": {
      "id": "oai:materialscloud.org:2364"
    }, 
    "keywords": [
      "Twisted multilayer graphene", 
      "Tight-binding", 
      "WannierTools", 
      "2D materials", 
      "Experimental", 
      "MARVEL"
    ], 
    "conceptrecid": "2363", 
    "is_last": true, 
    "references": [
      {
        "type": "Journal reference", 
        "doi": "https://doi.org/10.1038/s41699-024-00449-w", 
        "url": "https://www.nature.com/articles/s41699-024-00449-w", 
        "comment": "Paper in which the method is described", 
        "citation": "M. Perrin, A. Jayaraj, B. Ghawri, K. Watanabe, T. Taniguchi, D. Passerone, M. Calame, and J. Zhang, npj 2D Materials and Applications 8, 14 (2024)"
      }
    ], 
    "publication_date": "Jan 08, 2025, 14:44:01", 
    "license": "Creative Commons Attribution 4.0 International", 
    "id": "2364", 
    "description": "Twisted van der Waals heterostructures have recently emerged as a versatile platform for engineering interaction-driven, topological phenomena with a high degree of control and tunability. Since the initial discovery of correlated phases in twisted bilayer graphene, a wide range of moir\u00e9 materials have emerged with fascinating electronic properties. While the field of twistronics has rapidly evolved and now includes a range of multi-layered systems, moir\u00e9 systems comprised of double trilayer graphene remain elusive. Here, we report electrical transport measurements combined with tight-binding calculations in twisted double trilayer graphene (TDTLG). We demonstrate that small-angle TDTLG (~1.7\u22122.0\u1d52) exhibits an intrinsic bandgap at the charge neutrality point. Moreover, by tuning the displacement field, we observe a continuous insulator-semimetal-insulator transition at the CNP, which is also captured by tight-binding calculations. These results establish TDTLG systems as a highly tunable platform for further exploration of magneto-transport and optoelectronic properties.", 
    "version": 1, 
    "contributors": [
      {
        "email": "mickael.perrin@empa.ch", 
        "affiliations": [
          "Transport at Nanoscale Interfaces Laboratory, Empa, Swiss Federal Laboratories for Materials Science and Technology, 8600, D\u00fcbendorf, Switzerland", 
          "Department of Information Technology and Electrical Engineering, ETH Zurich, 8092, Zurich, Switzerland", 
          "Quantum Center, ETH Z\u00fcrich, 8093, Z\u00fcrich, Switzerland"
        ], 
        "familyname": "L. Perrin", 
        "givennames": "Mickael"
      }, 
      {
        "affiliations": [
          "nanotech@surfaces Laboratory, Empa, Swiss Federal Laboratories for Materials Science and Technology, 8600, D\u00fcbendorf, Switzerland"
        ], 
        "familyname": "Jayaraj", 
        "givennames": "Anooja"
      }, 
      {
        "affiliations": [
          "Transport at Nanoscale Interfaces Laboratory, Empa, Swiss Federal Laboratories for Materials Science and Technology, 8600, D\u00fcbendorf, Switzerland"
        ], 
        "familyname": "Ghawri", 
        "givennames": "Bhaskar"
      }, 
      {
        "affiliations": [
          "Research Center for Functional Materials, National Institute for Materials Science, 1-1 Namiki, Tsukuba, 305-0044, Japan"
        ], 
        "familyname": "Watanabe", 
        "givennames": "Kenji"
      }, 
      {
        "affiliations": [
          "International Center for Materials Nanoarchitectonics, National Institute for Materials Science, 1-1 Namiki, Tsukuba, 305-0044, Japan"
        ], 
        "familyname": "Taniguchi", 
        "givennames": "Takashi"
      }, 
      {
        "affiliations": [
          "nanotech@surfaces Laboratory, Empa, Swiss Federal Laboratories for Materials Science and Technology, 8600, D\u00fcbendorf, Switzerland"
        ], 
        "familyname": "Passerone", 
        "givennames": "Daniele"
      }, 
      {
        "affiliations": [
          "Transport at Nanoscale Interfaces Laboratory, Empa, Swiss Federal Laboratories for Materials Science and Technology, 8600, D\u00fcbendorf, Switzerland", 
          "Department of Physics, University of Basel, 4056, Basel, Switzerland", 
          "Swiss Nanoscience Institute, University of Basel, 4056, Basel, Switzerland"
        ], 
        "familyname": "Calame", 
        "givennames": "Michel"
      }, 
      {
        "affiliations": [
          "Transport at Nanoscale Interfaces Laboratory, Empa, Swiss Federal Laboratories for Materials Science and Technology, 8600, D\u00fcbendorf, Switzerland"
        ], 
        "familyname": "Zhang", 
        "givennames": "Jian"
      }
    ], 
    "edited_by": 576
  }, 
  "updated": "2025-01-08T13:44:01.454687+00:00"
}