Electric Field Control of Chirality
Abstract
Polar textures have attracted significant attention in recent years as a promising analog to spin-based textures in ferromagnets. Here, using optical second harmonic generation based circular dichroism, we demonstrate deterministic and reversible control of chirality over mesoscale regions in ferroelectric vortices using an applied electric field. The microscopic origins of the chirality, the pathway during the switching, and the mechanism for electric-field control are described theoretically via phase-field modeling and second-principles simulations, and experimentally by examination of the microscopic response of the vortices under an applied field. The emergence of chirality from the combination of non-chiral materials and subsequent control of the handedness with an electric field has far-reaching implications for new electronics based on chirality as a field controllable order parameter.
Cite
@article{arxiv.2105.14109,
title = {Electric Field Control of Chirality},
author = {Piush Behera and Molly A. May and Fernando Gómez-Ortiz and Sandhya Susarla and Sujit Das and Christopher T. Nelson and Lucas Caretta and Shang-Lin Hsu and Margaret R. McCarter and Benjamin H. Savitzky and Edward S. Barnard and Archana Raja and Zijian Hong and Pablo García-Fernandez and Stephen W. Lovesey and Gerrit van der Laan and Colin Ophus and Lane W. Martin and Javier Junquera and Markus B. Raschke and Ramamoorthy Ramesh},
journal= {arXiv preprint arXiv:2105.14109},
year = {2021}
}
Comments
19 pages, 4 figures Supplement: 27 pages, 13 figures