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 Detalle_Publicacion

Transferring orbital angular momentum to an electron beam reveals toroidal and chiral order

Abstract: Orbital angular momentum (OAM) and torque transfer play central roles in a wide range of magnetic textures and devices including skyrmions and spin-torque electronics. Analogous topological structures are now also being explored in ferroelectrics, including polarization vortex arrays in ferroelectric/dielectric superlattices. Unlike magnetic toroidal order, electric toroidal order does not couple directly to linear external fields. Instead, we find that the presence of an electric toroidal moment in a ferrorotational phase transfers measurable torque and OAM to a localized electron beam in the ballistic limit. We record these torque transfers from a high-energy electron beam using a momentum-resolved detector. This approach provides a high-sensitivity method to detect polarization fields and their more complex order parameters and topologies. In addition to toroidal order, we also demonstrate high-precision measurements of vorticity and chirality for polar vortexlike phases.

Otras publicaciones de la misma revista o congreso con autores/as de la Universidad de Cantabria

 Autoría: Nguyen K.X., Jiang Y., Cao M.C., Purohit P., Yadav A.K., García-Fernández P., Tate M.W., Chang C.S., Aguado-Puente P., Íñiguez J., Gomez-Ortiz F., Gruner S.M., Junquera J., Martin L.W., Ramesh R., Muller D.A.,

 Fuente: Physical Review B, 2023, 107(20), 205419

Editorial: American Physical Society

 Fecha de publicación: 01/05/2023

Nº de páginas: 11

Tipo de publicación: Artículo de Revista

 DOI: 10.1103/PhysRevB.107.205419

ISSN: 1098-0121,1550-235X,2469-9950,2469-9969

 Proyecto español: PGC2018-096955-B

Url de la publicación: https://doi.org/10.1103/PhysRevB.107.205419

Autoría

NGUYEN, K. X.

JIANG, Y.

CAO, M. C.

PUROHIT, P.

YADAV, A. K.

TATE, M. W.

CHANG, C. S.

ÍÑIGUEZ, J.

FERNANDO GOMEZ ORTIZ

GRUNER, S. M.

RAMESH, R.

MULLER, D. A.