Shenyang Academy of Environmental Sciences (China)

Imaging electron-hole asymmetry in the quantum melting of generalized Wigner crystals

Two-dimensional moiré materials provide a versatile platform to explore phase transitions in strongly correlated systems. Using scanning tunneling microscopy, we imaged the density-driven melting of generalized Wigner crystals (GWCs) and Mott insulators (MIs) in electron-doped, n...

Decoupling the inverse κ – E g trade-off in 2D organic–inorganic magnetic semiconductors

Simultaneously achieving a high dielectric constant (κ) and a wide bandgap (Eg) in a single material remains challenging. Here, we report a charged-building-unit stacking strategy that yields tetragonal β-Fe3Se4-based organic–inorganic semiconductors. These materials exhibit both...

Deformable precipitates locally modify fault-mediated plasticity for strength-ductility synergy

Precipitates in structural alloys are conventionally understood as passive obstacles to dislocation motion. Here we show that semi-coherent hexagonal close-packed precipitates in a low-stacking-fault-energy Ni50Co30Ru20 multi-principal element alloy cooperate with planar-fault pl...