[8a-E207-1~11] 10.4 Spintronics in semiconductor, topological material, superconductor, and multiferroics

11:30 AM - 11:45 AM JST(2:30 AM - 2:45 AM UTC)English Presentation

[8a-E207-10] Polarization transfer force on ferroelectric domain walls

〇(P)Huanhuan Yang¹, Peng Yan², Gerrit E. W. Bauer¹ (1.Tohoku University, 2.UESTC)

Keywords:

ferron; domain wall; nonlinearity

We investigate the dynamics of ferroelectric textures driven by polarization currents. We show that ferrons, the quanta of collective polarization excitations, provide an exotic driving mechanism for domain wall (DW) dynamics, compared with their magnonic counterparts. By mapping the linear polarization dynamics of a DW onto a Schrödinger-like problem with a Pöschl-Teller potential, we show that polarization waves are fully transmitted and therefore do not exert a net force on the DWin the linear regime. However, intrinsic nonlinearities give rise to a negative radiation pressure that pulls the DW toward the source. This mechanism allows efficient DW control by optical excitation and temperature gradients with application potential in ferroelectric memory and logic devices.