Tunable moiré materials for probing Berry physics and topology
Berry curvature physics and quantum geometric effects have been instrumental in
advancing topological condensed matter physics in recent decades. Although Landau level …
advancing topological condensed matter physics in recent decades. Although Landau level …
Two-dimensional Thouless pumping of light in photonic moiré lattices
P Wang, Q Fu, R Peng, YV Kartashov, L Torner… - Nature …, 2022 - nature.com
Continuous and quantized transports are profoundly different. The latter is determined by the
global rather than local properties of a system, it exhibits unique topological features, and its …
global rather than local properties of a system, it exhibits unique topological features, and its …
From neutron star observations to nuclear matter properties: A machine learning approach
This study is devoted to the inference problem of extracting the nuclear matter properties
directly from a set of mass-radius observations. We employ Bayesian neural networks …
directly from a set of mass-radius observations. We employ Bayesian neural networks …
Higher order gaps in the renormalized band structure of doubly aligned hBN/bilayer graphene moiré superlattice
This paper presents our findings on the recursive band gap engineering of chiral fermions in
bilayer graphene doubly aligned with hBN. Using two interfering moiré potentials, we …
bilayer graphene doubly aligned with hBN. Using two interfering moiré potentials, we …
Decoding neutron star observations: Revealing composition through Bayesian neural networks
We exploit the great potential offered by Bayesian neural networks (BNNs) to directly
decipher the internal composition of neutron stars (NSs) based on their macroscopic …
decipher the internal composition of neutron stars (NSs) based on their macroscopic …
Flat bands and electronic localization in twisted bilayer graphene nanoribbons
We analyze the electronic structure of twisted bilayer graphene (TBG) nanoribbons close to
the magic angle. We describe a transition from an incomplete to a complete moiré structure …
the magic angle. We describe a transition from an incomplete to a complete moiré structure …
Mechanically reconfigurable van der Waals devices via low-friction gold sliding
AZ Barabas, I Sequeira, Y Yang… - Science …, 2023 - science.org
Interfaces of van der Waals (vdW) materials, such as graphite and hexagonal boron nitride
(hBN), exhibit low-friction sliding due to their atomically flat surfaces and weak vdW bonding …
(hBN), exhibit low-friction sliding due to their atomically flat surfaces and weak vdW bonding …
Fractal energy gaps and topological invariants in hBN/graphene/hBN double moiré systems
H Oka, M Koshino - Physical Review B, 2021 - APS
We calculate the electronic structure in quasiperiodic double moiré systems of graphene
sandwiched by hexagonal boron nitride (hBN) and identify the characteristic integers of …
sandwiched by hexagonal boron nitride (hBN) and identify the characteristic integers of …
Topological invariants in two-dimensional quasicrystals
M Koshino, H Oka - Physical Review Research, 2022 - APS
We provide a topological concept to characterize energy gaps in general two-dimensional
quasiperiodic systems. We show that every single gap is uniquely characterized by a set of …
quasiperiodic systems. We show that every single gap is uniquely characterized by a set of …
Topological charge pumping in twisted bilayer graphene
We show that a sliding motion between the two layers of a moiré superlattice induces an
electric current and realizes a two-dimensional version of the topological Thouless pump …
electric current and realizes a two-dimensional version of the topological Thouless pump …