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cond-mat.mtrl-sci2026
Interlayer Registry Controls Polar Topology in Twisted Bilayer h-BN
Di Fan, Changming Ke, Shi Liu
Twisting van der Waals bilayers creates a moir'e stacking field with periodically varying local interlayer registry, enabling spatially patterned polarization. However, a systemati…
cond-mat.mtrl-sci2026
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…
cond-mat.mtrl-sci2026
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…