Tunable moiré materials for probing Berry physics and topology

PC Adak, S Sinha, A Agarwal… - Nature Reviews Materials, 2024 - nature.com
Berry curvature physics and quantum geometric effects have been instrumental in
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 …

From neutron star observations to nuclear matter properties: A machine learning approach

V Carvalho, M Ferreira, C Providência - Physical Review D, 2024 - APS
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 …

Higher order gaps in the renormalized band structure of doubly aligned hBN/bilayer graphene moiré superlattice

MK Jat, P Tiwari, R Bajaj, I Shitut, S Mandal… - Nature …, 2024 - nature.com
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 …

Decoding neutron star observations: Revealing composition through Bayesian neural networks

V Carvalho, M Ferreira, T Malik, C Providência - Physical Review D, 2023 - APS
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 …

Flat bands and electronic localization in twisted bilayer graphene nanoribbons

E Andrade, PA Pantaleón, F Guinea, GG Naumis - Physical Review B, 2023 - APS
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 …

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 …

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 …

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 …

Topological charge pumping in twisted bilayer graphene

Y Zhang, Y Gao, D Xiao - Physical Review B, 2020 - APS
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 …