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 …

Emergent phases in graphene flat bands

S Bhowmik, A Ghosh, U Chandni - Reports on Progress in …, 2024 - iopscience.iop.org
Electronic correlations in two-dimensional materials play a crucial role in stabilising
emergent phases of matter. The realisation of correlation-driven phenomena in graphene …

Nonlinear anomalous Hall effects probe topological phase-transitions in twisted double bilayer graphene

A Chakraborty, K Das, S Sinha, PC Adak… - 2D …, 2022 - iopscience.iop.org
Nonlinear anomalous (NLA) Hall effect is the Berry curvature dipole induced second-order
Hall voltage or temperature difference induced by a longitudinal electric field or temperature …

Observation of linear and nonlinear light localization at the edges of Moiré arrays

AA Arkhipova, YV Kartashov, SK Ivanov… - Physical review …, 2023 - APS
We observe linear and nonlinear light localization at the edges and in the corners of
truncated moiré arrays created by the superposition of periodic mutually twisted at …

Topological network modes in a twisted moiré phononic crystal

D Yao, L Ye, Z Fu, Q Wang, H He, J Lu, W Deng… - Physical Review Letters, 2024 - APS
Twisted moiré materials, a new class of layered structures with different twist angles for
neighboring layers, are attracting great attention because of the rich intriguing physical …

Spontaneous time-reversal symmetry breaking in twisted double bilayer graphene

M Kuiri, C Coleman, Z Gao, A Vishnuradhan… - Nature …, 2022 - nature.com
Twisted double bilayer graphene (tDBG) comprises two Bernal-stacked bilayer graphene
sheets with a twist between them. Gate voltages applied to top and back gates of a tDBG …

Signature of correlated insulator in electric field controlled superlattice

J Sun, SA Akbar Ghorashi, K Watanabe… - Nano Letters, 2024 - ACS Publications
On a two-dimensional crystal, a “superlattice” with nanometer-scale periodicity can be
imposed to tune the Bloch electron spectrum, enabling novel physical properties …

Moiré fractional Chern insulators. II. First-principles calculations and continuum models of rhombohedral graphene superlattices

J Herzog-Arbeitman, Y Wang, J Liu, PM Tam, Z Qi… - Physical Review B, 2024 - APS
The experimental discovery of fractional Chern insulators (FCIs) in rhombohedral pentalayer
graphene twisted on hexagonal boron nitride (hBN) has preceded theoretical prediction …

'Magic'of twisted multi-layered graphene and 2D nano-heterostructures

K Saumya, S Naskar, T Mukhopadhyay - Nano Futures, 2023 - iopscience.iop.org
Two-dimensional materials with a single or few layers are exciting nano-scale materials that
exhibit unprecedented multi-functional properties including optical, electronic, thermal …

Electric-Field-Tunable Edge Transport in Bernal-Stacked Trilayer Graphene

SK Srivastav, A Udupa, K Watanabe, T Taniguchi… - Physical Review Letters, 2024 - APS
This Letter presents a nonlocal study on the electric-field-tunable edge transport in h-BN-
encapsulated dual-gated Bernal-stacked (ABA) trilayer graphene across various …