[Th-P1-B] Novel optoelectric phenomena in 2D materials

2:00 PM - 2:15 PM JST(5:00 AM - 5:15 AM UTC)

[Th-P1-B-01] Stabilization of Sliding Ferroelectricity through Exciton Condensation

Matteo D'Alessio^1,2, Daniele Varsano², Elisa Molinari^1,2, 〇Massimo Rontani² (1. Univ. of Modena (Italy), 2. CNR-NANO (Italy))

Sliding ferroelectricity arises from the insurgence of spontaneous electronic polarization perpendicular to the layers of 2D systems. Here we investigate theoretically the phenomenon by focusing on the paradigmatic WTe₂ bilayer. We show that exciton condensation contributes significantly to stabilizing ferroelectricity upon sliding.