5 papers
Twist and strain identification in moiré heterostructures
Zhen Zhan, Federico Escudero, Dong Wang +4
The geometrical and electronic properties of moiré materials are highly sensitive to the twist and strain in the samples due to the moiré magnifying effect. Accurate identification…
Tunable topological narrow bands in twisted bilayer-trilayer graphene
Dong Wang, Federico Escudero, Zhen Zhan +1
We investigate the low-energy band structure and topology of twisted bilayer--trilayer graphene with four stacking configurations: AB--ABC, BA--ABC, AB--ABA, and BA--ABA. Using bot…
Straintronics and twistronics in bilayer graphene
Federico Escudero, Dong Wang, Pierre A. Pantaleón +3
The interplay of twist and strain in bilayer graphene enables the formation of moiré patterns and narrow bands that host correlated and topological phases. While magic-angle twiste…
Pressure Induced 18 K Superconductivity and Two Superconducting Phases in CuIr2S4
Bijuan Chen, Yuhao Gu, Dong Wang +20
We report pressure-induced superconductivity in the spinel CuIrS with a transition temperature () reaching \textbf{18.2 K}, establishing a new record for…
Giant electrocaloric response in the prototypical Pb(Mg,Nb)O relaxor ferroelectric from atomistic simulations
Zhijun Jiang, Y. Nahas, S. Prokhorenko +4
An atomistic effective Hamiltonian is used to investigate electrocaloric (EC) effects of Pb(MgNb)O (PMN) relaxor ferroelectrics in its ergodic regime, and sub…