5 papers
Revisiting Ferroelectricity Beyond Polar Space Groups
Yudi Yang, Changming Ke, Shi Liu
Ferroelectricity, a hallmark of spontaneous inversion-symmetry breaking, has been a central concept in condensed matter physics and functional materials research, yet recent discov…
Proximity Ferroelectricity Driven by Mobile High-Miller-Index Domain Walls
Changming Ke, Shi Liu
Wurtzite ferroelectrics such as scandium-doped aluminum nitride (AlScN) are promising for next-generation memory because of their compatibility with semiconductor processes and str…
Topological Control of Transition Metal Networks for Reversible High-Capacity Li-rich Cathodes
Changming Ke, Yudi Yang, Minjun Wang +2
Developing high-energy-density batteries is essential for advancing sustainable energy technologies. However, leading cathode materials such as Li-rich oxides, including LiMnO$…
Rippled Moire Superlattices for Decoupled Ferroelectric Bits
Di Fan, Changming Ke, Shi Liu
Symmetry considerations suggest that moire superlattices formed by twisted two-dimensional materials should preserve overall inversion symmetry. However, experiments consistently r…
Superlubric Motion of Wave-like Domain Walls in Sliding Ferroelectrics
Changming Ke, Fucai Liu, Shi Liu
Sliding ferroelectrics constructed from stacked nonpolar monolayers enable out-of-plane polarization in two dimensions with exceptional properties, including ultrafast switching sp…