Speaker
Mr
Jin Jiang
(1 Laboratory of Quantum Physics (LQP), Institute of Physics, Ecole Polytechnique Fédérale de Lausanne (EPFL), 1015 Lausanne, Switzerland)
Description
Twisted monolayer-bilayer graphene (TMBG) exhibits renormalized nearly flat bands harboring various exotic physical phenomena. Stacking an additional monolayer graphene on the TMBG paves a new way to extract single particle bandgap, the charge neutrality point (CNP) gap and bandwidth. The Dirac cone in the decoupled monolayer graphene serves as a perfect chemical potential sensor when the Landau levels (LLs) cross the bands, whereas the LLs are well separated and are not hybridized with flat bands. At D=0.53V/nm, the isospin flavor symmetry-broken correlated gap at flat-band filling ν=1 is largest and bandwidth is narrowest. This is a versatile tool which can be used in various similar systems to find thermodynamic properties.
Author
Mr
Jin Jiang
(1 Laboratory of Quantum Physics (LQP), Institute of Physics, Ecole Polytechnique Fédérale de Lausanne (EPFL), 1015 Lausanne, Switzerland)
Co-authors
Dr
Sheng Chen
(Laboratory of Quantum Physics (LQP), Institute of Physics, Ecole Polytechnique Fédérale de Lausanne (EPFL), 1015 Lausanne, Switzerland)
Mr
Zekang Zhou
(Laboratory of Quantum Physics (LQP), Institute of Physics, Ecole Polytechnique Fédérale de Lausanne (EPFL), 1015 Lausanne, Switzerland)
Prof.
Kenji Watanabe
(Research Center for Functional Materials, National Institute for Materials Science, 1-1 Namiki, Tsukuba 305-0044, Japan)
Dr
Takashi Taniguchi
(International Center for Materials Nanoarchitectonics, National Institute for Materials Science, 1-1 Namiki, Tsukuba 305-0044, Japan)
Prof.
Mitali Banerjee
(Laboratory of Quantum Physics (LQP), Institute of Physics, Ecole Polytechnique Fédérale de Lausanne (EPFL), 1015 Lausanne, Switzerland)
