Light-driven motion of charged domain walls in isolated ferroelectrics

Author(s)

Ordonez-Pimentel, Jonathan ; Venet, Michel ; Ochoa, Diego A. ; Rubio-Marcos, Fernando ; Fernandez, Jose F. ; Garcia, Jose E.

• Document type: Journal article
• Source: PHYSICAL REVIEW B; v. 106, n. 22, p. 10-pg., 2022-12-26.

Abstract

Light-induced ferroelectric domain wall motion turns out to be a promising phenomenon to develop new photocontrolled devices. However, the physical origin of this light-matter coupling when material is irradiated with visible light remains unclear. Here, a phenomenological model predicting the motion of charged domain walls (CDWs) is developed. The photoinduced electronic reconstruction mechanism is proposed as the primary absorption mechanism, leading to a linear dependence for the polarization perturbation with the light intensity. Domain wall motion is then driven by the energetic difference between domains in a CDW array, such that the macroscopic polarization can be easily tuned. (AU)

• FAPESP's process: 17/17872-1 - New lead free magnetoelectric composites with high performance
• Grantee: Michel Venet Zambrano
• Support Opportunities: Scholarships abroad - Research
• FAPESP's process: 22/08030-5 - Optical control of the polarization in ferroelectric materials
• Grantee: Michel Venet Zambrano
• Support Opportunities: Regular Research Grants