Sub-nanosecond polarization switching with anomalous kinetics in vdW ferroelectric WTe2

Characterizations of ferroelectricity in WTe₂

WTe₂ exhibits various crystal structures, such as 2H, 1T’, and T_d. In the T_d phase (T_d-WTe₂, space group Pnm2₁), the tungsten (W) atoms are surrounded by octahedra formed by…