Twisted Bilayer Graphene: Structure and Emergent Phases

Presentations

• Anomalous electron-phonon coupling in magic-angle twisted bilayer graphene.

  ORAL

  March 15, 2022, 3:00 PM – March 15, 2022, 3:12 PM

  Presenters

  • Andreij Gadelha

    • University of Colorado, Boulder

  Authors

  • Andreij Gadelha

    • University of Colorado, Boulder

  View abstract →

• Torsional Periodic Lattice Distortion in Twisted Bilayer Graphene

  ORAL

  March 15, 2022, 3:12 PM – March 15, 2022, 3:24 PM

  Presenters

  • Suk Hyun Sung

    • University of Michigan

  Authors

  • Suk Hyun Sung

    • University of Michigan

  • Yin Min Goh

    • University of Michigan

  • Hyobin Yoo

    • Harvard University

  • Rebecca Engelke

    • Harvard University

  • Philip Kim

    • Harvard University

  • Robert Hovden

    • University of Michigan

  View abstract →

• Wigner crystallization at large fine structure constant

  ORAL

  March 15, 2022, 3:24 PM – March 15, 2022, 3:36 PM

  Presenters

  • Sandeep Joy

    • Ohio State University

  Authors

  • Sandeep Joy

    • Ohio State University

  • Brian Skinner

    • Ohio State Univ - Columbus
    • Department of Physics, The Ohio State University, Columbus, Ohio

  View abstract →

• Stacking-dependent binding energy of bilayer graphene from diffusion Monte Carlo

  ORAL

  March 15, 2022, 3:36 PM – March 15, 2022, 3:48 PM

  Presenters

  • Kittithat Krongchon

    • University of Illinois at Urbana-Champaign

  Authors

  • Kittithat Krongchon

    • University of Illinois at Urbana-Champaign

  • Tawfiqur Rakib

    • University of Illinois at Urbana-Champaign

  • Elif Ertekin

    • University of Illinois at Urbana-Champaign
    • University of Illinois at Urbana-Champai
    • U Illinois

  • Harley T Johnson

    • University of Illinois at Urbana-Champaign

  • Lucas K Wagner

    • University of Illinois at Urbana-Champaign

  View abstract →

• An accurate tight binding model for twisted bilayer graphene describes topological flat bands without geometric relaxation

  ORAL

  March 15, 2022, 3:48 PM – March 15, 2022, 4:00 PM

  Presenters

  • Shivesh Pathak

    • University of Illinois at Urbana-Champai

  Authors

  • Shivesh Pathak

    • University of Illinois at Urbana-Champai

  • Tawfiqur Rakib

    • University of Illinois at Urbana-Champaign

  • Run Hou

    • Rice Univ

  • Andriy H Nevidomskyy

    • Rice Univ
    • Rice University
    • Department of Physics and Astronomy, Rice University, Houston, Texas 77005, USA
    • Department of Physics and Astronomy, Rice University, TX, USA
    • Department of Physics and Astronomy, Rice University
    • Department of Physics & Astronomy, Rice University

  • Elif Ertekin

    • University of Illinois at Urbana-Champaign
    • University of Illinois at Urbana-Champai
    • U Illinois

  • Harley T Johnson

    • University of Illinois at Urbana-Champaign

  • Lucas K Wagner

    • University of Illinois at Urbana-Champaign

  View abstract →

• Fractional Chern Insulators and Hofstadter Band Geometry in Magic-Angle Graphene

  ORAL

  March 15, 2022, 4:00 PM – March 15, 2022, 4:12 PM

  Publication: Fractional Chern Insulators and Hofstadter Band Geometry in Magic-Angle Graphene, in preparation.
  See also: Fractional Chern insulators in magic-angle twisted bilayer graphene, arXiv: 2107.10854

  Presenters

  • Daniel E Parker

    • University of California, Berkeley
    • Harvard University

  Authors

  • Daniel E Parker

    • University of California, Berkeley
    • Harvard University

  • Patrick J Ledwith

    • Harvard University

  • Eslam Khalaf

    • Harvard University

  • Tomohiro Soejima

    • University of California, Berkeley

  • Johannes Hauschild

    • University of California, Berkeley

  • Ashvin Vishwanath

    • Harvard University

  View abstract →

• Fractons in moir\'e materials

  ORAL

  March 15, 2022, 4:12 PM – March 15, 2022, 4:24 PM

  Presenters

  • Dan Mao

    • Cornell University

  Authors

  • Dan Mao

    • Cornell University

  • Kevin Zhang

    • Cornell University

  • Zhen Bi

    • Pennsylvania State University

  • Eun-Ah Kim

    • Cornell University

  View abstract →

• Fractional correlated insulating states at n±1/3 filled magic angle twisted bilayer graphene

  ORAL

  March 15, 2022, 4:24 PM – March 15, 2022, 4:36 PM

  Publication: A manuscript based on this work was submitted to Nature Communications; preprint available at https://arxiv.org/abs/2105.13371

  Presenters

  • Kevin Zhang

    • Cornell University

  Authors

  • Kevin Zhang

    • Cornell University

  • Yang Zhang

    • Massachusetts Institute of Technology

  • Liang Fu

    • Massachusetts Institute of Technology MI
    • Massachusetts Institute of Technology

  • Eun-Ah Kim

    • Cornell University

  View abstract →

• Landau level degeneracy lifting by the emergence of massive quasiparticles in magic-angle twisted bilayer graphene

  ORAL

  March 15, 2022, 4:36 PM – March 15, 2022, 4:48 PM

  Publication: S. Wu, Z. Zhang, K. Watanabe, T. Taniguchi, E. Y. Andrei. Nature Materials, 20, 488 (2021)

  Presenters

  • Shuang Wu

    • Rutgers University, New Brunswick
    • Rutgers University

  Authors

  • Shuang Wu

    • Rutgers University, New Brunswick
    • Rutgers University

  • Zhenyuan Zhang

    • Rutgers University

  • Kenji Watanabe

    • National Institute for Materials Science, Tsukuba, Japan
    • National Institute for Materials Science
    • NIMS
    • Research Center for Functional Materials, National Institute for Materials Science, Tsukuba, Ibaraki 305-0044, Japan
    • Research Center for Functional Materials, National Institute for Materials Science, 1-1 Namiki, Tsukuba 305-0044, Japan.
    • Research Center for Functional Materials, National Institute for Materials Science
    • Advanced, Materials Laboratory, NIMS
    • 3 National Institute for Materials Science, Tsukuba, Japan
    • National Institute for Materials Science; 1-1 Namiki, Tsukuba, Ibaraki 305-0044, Japan
    • National Institute of Materials Science, Tsukuba, Japan
    • National Institute of Materials Science
    • Advanced Materials Laboratory, National Institute for Materials Science, 1-1 Namiki, Tsukuba, 305-0044, Japan
    • National Institute for Materials Science (Japan)
    • National Institute for Materials Science, Japan
    • Research Center for Functional Materials, National Institute for Materials Science, 1-1 Namiki, Tsukuba 305-0044, Japan
    • Research Center for Functional Materials
    • Research Center for Functional Materials, National Institute for Materials Science, Tsukuba, Japan
    • Research Center for Functional Materials, National Institute for Materials Science, Japan
    • Research Center for Functional Materials, National Institute for Materials Science, 1-1Namiki, Tsukuba 305-0044, Japan
    • National Institute for Material Science, Japan
    • National Institute for Material Science
    • National Institute of Material Sciences, Japan
    • NIMS, Tsukuba
    • 2National Institute for Materials Science, Namiki 1-1, Ibaraki 305-0044, Japan.
    • National Institute of Materials Science, Tsukuba, Ibaraki 305-0044, Japan
    • National Institute for Materials Science Japan
    • NIMS, Japan
    • nims
    • National Institute for Materials Science, Research Center for Functional Materials, Japan
    • National Institute for Materials Science Tsukuba
    • National Institute for Materials Science, 1-1 Namiki
    • National Institute for Materials Science of Japan
    • National Institute for Materials Science, 1-1 Namiki, Tsukuba 305-0044, Japan
    • NIMS - National Institute for Material Science, Japan
    • Research Center for Functional Materials, National Institute for Material Science, Tsukuba, Ibaraki, 305-0044, Japan.
    • National Institute for Material Science, Tsukuba
    • National Institute for Materials Science, Tsukuba, Ibaraki 305-0044, Japan
    • National Institute for Materials Science (NIMS)
    • National Institute for Materials Science, Research Center for Functional Materials
    • Research Center for Functional Materials, National Institute for Materials Science, 1-1 Namiki, Tsukuba, Ibaraki 305-0044, Japan
    • National Institute of Material Science
    • Kyoto Univ
    • National Institute for Materials Science,1-1 Namiki, Tsukuba, 305-0044, Japan

  • Takashi Taniguchi

    • National Institute for Materials Science, Tsukuba, Japan
    • National Institute for Materials Science
    • NIMS
    • Kyoto Univ
    • International Center for Materials Nanoarchitectonics, National Institute for Materials Science, 1-1 Namiki, Ibaraki 305-0044, Japan.
    • 3 National Institute for Materials Science, Tsukuba, Japan
    • National Institute for Materials Science; 1-1 Namiki, Tsukuba, Ibaraki 305-0044, Japan
    • National Institute of Materials Science, Tsukuba, Japan
    • National Institute of Materials Science
    • Advanced Materials Laboratory, National Institute for Materials Science, 1-1 Namiki, Tsukuba, 305-0044, Japan
    • National Institute for Materials Science (Japan)
    • International Center for Materials Nanoarchitectonics, National Institute for Materials Science
    • International Center for Materials Nanoarchitectonics, National Institute for Materials Science, 1-1 Namiki, Tsukuba 305-0044, Japan
    • Kyoto University
    • International Center for Materials Nanoarchitectonics
    • International Center for Materials Nanoarchitectonics, National Institute for Materials Science, Tsukuba, Japan
    • International Center for Materials Nanoarchitectonics, National Institute for Materials Science, Japan
    • International Center for Materials Nanoarchitectonics, National Institute for MaterialsScience, 1-1 Namiki, Tsukuba 305-0044, Japan
    • National Institute for Material Science, Japan
    • National Institute for Material Science
    • National Institute of Material Sciences, Japan
    • NIMS, Tsukuba
    • 2National Institute for Materials Science, Namiki 1-1, Ibaraki 305-0044, Japan.
    • National Institute of Materials Science, Tsukuba, Ibaraki 305-0044, Japan
    • National Institute for Materials Science, Japan
    • International Center for Materials Nanoarchitectonics (WPI-MANA), National Institute for Materials Science, 1-1 Namiki Tsukuba, Ibaraki 305-0044, Japan.
    • NIMS, Japan
    • National Institute for Materials Science (NIMS)
    • NIMS. Japan
    • International Center for Material Nanoarchitectonics, National Institute for Materials Science, Tsukuba, Japan
    • International Center for Material Nanoarchitectonics, National Institute for Materials Science
    • National Institute for Materials Science Tsukuba
    • National Institute for Materials Science, 1-1 Namiki
    • National Institute for Materials Science of Japan
    • National Institute for Materials Science, 1-1 Namiki, Tsukuba 305-0044, Japan
    • NIMS - National Institute for Material Science, Japan
    • International Center for Materials Nanoarchitectonics, National Institute for Material Science, Tsukuba, Ibaraki 305-0044, Japan.
    • National Institute for Material Science, Tsukuba
    • National Institute for Materials Science, International Center for Materials Nanoarchitectonics
    • International Center for Materials Nanoarchitectonics, National Institute for Materials Science, 1-1 Namiki, Tsukuba, Ibaraki 305-0044, Japan
    • National Institute of Material Science
    • National Institute for Materials Science,1-1 Namiki, Tsukuba, 305-0044, Japan

  • Eva Y Andrei

    • Rutgers University
    • Rutgers University, Department of Physics and Astronomy, 136 Frelinghuysen Rd, Piscataway, 08854, New Jersey, USA

  View abstract →

• Twist induced ferromagnetism in a bilayer graphene nanoflex

  ORAL

  March 15, 2022, 4:48 PM – March 15, 2022, 5:00 PM

  Publication: D. Pant, S. Aryal, S. Mandal, and R. Pati, Nano Lett. 2021, 21, 7548-7554.

  Presenters

  • Dharmendra Pant

    • Michigan Technological University

  Authors

  • Dharmendra Pant

    • Michigan Technological University

  • Sandip Aryal

    • Michigan Technological University

  • Subhasish Mandal

    • Rutgers University

  • Ranjit Pati

    • Michigan Technological University

  View abstract →

• Chern bands of twisted bilayer graphene: fractional Chern insulators and spin phase transition

  ORAL

  March 15, 2022, 5:00 PM – March 15, 2022, 5:12 PM

  Publication: Chern bands of twisted bilayer graphene: Fractional Chern insulators and spin phase transition
  Cécile Repellin and T. Senthil, Phys. Rev. Research 2, 023238 (2020)

  Presenters

  • Cecile Repellin

    • LPMMC, CNRS

  Authors

  • Cecile Repellin

    • LPMMC, CNRS

  • Senthil Todadri

    • Massachusetts Institute of Technology MIT

  View abstract →

• Moiré Superlattices at Fractional Band Fillings: Emergent Fermi Liquids, Charge Density Waves and Fractional Chern Insulators

  ORAL

  March 15, 2022, 5:12 PM – March 15, 2022, 5:24 PM

  Publication: [1] Particle-hole duality, Emergent Fermi liquids, and Fractional Chern Insulators in Moiré flatbands, Ahmed Abouelkomsan, Zhao Liu, Emil J Bergholtz, Phys. Rev. Lett. 124, 106803 (2020).
  [2] Gate-Tunable Fractional Chern Insulators in Twisted Double Bilayer Graphene, Zhao Liu, Ahmed Abouelkomsan, and Emil J. Bergholtz, Phys. Rev. Lett. 124, 106803 (2021)
  [3] Emergent nesting and competing phases in Moire flatlands of trilayer graphene aligned with boron nitrate, Ahmed Abouelkomsan et al., In prepartion.

  Presenters

  • Ahmed Abouelkomsan

    • Stockholm Univ

  Authors

  • Ahmed Abouelkomsan

    • Stockholm Univ

  • Zhao Liu

    • Zhejiang Univ

  • Kang Yang

    • Stockholm Univ
    • Stockholm University

  • Emil J Bergholtz

    • Stockholm University
    • Stockholm Univ

  View abstract →

• Band structure of the rippled twisted bilayer graphene

  ORAL

  March 15, 2022, 5:24 PM – March 15, 2022, 5:36 PM

  Presenters

  • Xu Han

    • Hong Kong University of Science and Technology

  Authors

  • Xu Han

    • Hong Kong University of Science and Technology

  • Jianpeng Liu

    • ShanghaiTech University

  • Junwei Liu

    • Hong Kong University of Science and Technology

  • Ding Pan

    • Hong Kong University of Science and Technology
    • The Hong Kong University of Science and Technology

  View abstract →

• Structural relaxation of twisted bilayer graphene approaching the magic angle by first-principles studies

  ORAL

  March 15, 2022, 5:36 PM – March 15, 2022, 5:48 PM

  Presenters

  • Martin Callsen

    • Academia Sinica

  Authors

  • Martin Callsen

    • Academia Sinica

  • Mei-Yin Chou

    • Institute of Atomic and Molecular Sciences, Academia Sinica, Taiwan
    • Academia Sinica, Taiwan
    • Academia Sinica

  • Chi-Ruei Pan

    • Georgia Institute of Technology

  View abstract →

• The moiré distortion effect on the flat band in twisted bilayer graphene.

  ORAL

  March 15, 2022, 5:48 PM – March 15, 2022, 6:00 PM

  Presenters

  • Naoto Nakatsuji

    • Osaka Univ

  Authors

  • Naoto Nakatsuji

    • Osaka Univ

  • Mikito Koshino

    • Osaka Univ

  View abstract →