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Electric field control of chirality

Abstract: Polar textures have attracted substantial 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 nonchiral 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.

 Autoría: Behera P., May M.A., Gómez-Ortiz F., Susarla S., Das S., Nelson C.T., Caretta L., Hsu S.L., McCarter M.R., Savitzky B.H., Barnard E.S., Raja A., Hong Z., García-Fernandez P., Lovesey S.W., van der Laan G., Ercius P., Ophus C., Martin L.W., Junquera J., Raschke M.B., Ramesh R.,

 Fuente: Science Advances, 2022, 8(1), eabj8030

Editorial: American Association for the Advancement of Science

 Fecha de publicación: 05/01/2022

Nº de páginas: 11

Tipo de publicación: Artículo de Revista

 DOI: 10.1126/sciadv.abj8030

ISSN: 2375-2548

 Proyecto español: PGC2018-096955-B-C41

Url de la publicación: https://doi.org/10.1126/sciadv.abj8030

Autoría

BEHERA, PIUSH

MAY, MOLLY A.

FERNANDO GOMEZ ORTIZ

SUSARLA, SANDHYA

DAS, SUJIT

NELSON, CHRISTOPHER T.

CARETTA, LUCAS

HSU, SHANG-LIN

MCCARTER, MARGARET R.

SAVITZKY, BENJAMIN H.

BARNARD, EDWARD S.

RAJA, ARCHANA

HONG, ZIJIAN

LOVESEY, STEPHEN W.

LAAN, GERRIT VAN DER

ERCIUS, PETER

OPHUS, COLIN