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Inherent spin-polarization coupling in a magnetoelectric vortex

Abstract: Solid-state materials are currently being explored as a platform for the manipulation of spins for spintronics and quantum information science. More broadly, a wide spectrum of ferroelectric materials, spanning from inorganic oxides to polymeric systems such as PVDF, present a different approach to explore quantum phenomena in which the spins are set and manipulated with electric fields. Using dilute Fe3+-doped ferroelectric PbTiO3-SrTiO3 superlattices as a model system, we demonstrate intrinsic spin-polarization control of spin directionality in complex ferroelectric vortices and skyrmions. Electron paramagnetic resonance (EPR) spectra show that the spins in the Fe3+ ion are strongly coupled to the local polarization and preferentially aligned perpendicular to the ferroelectric polar c axis in this complex vortex structure. The effect of polarization-spin directionality is corroborated by first-principles calculations, demonstrating the variation of the spin directionality with the polar texture and offering the potential for future quantum analogues of macroscopic magnetoelectric devices.

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

 Autoría: Das S., Laguta V., Inzani K., Huang W., Liu J., Chatterjee R., McCarter M.R., Susarla S., Ardavan A., Junquera J., Griffin S.M., Ramesh R.,

 Fuente: Nano Letters, 2022, 22(10), 3976-3982

Editorial: American Chemical Society

 Fecha de publicación: 13/05/2022

Nº de páginas: 7

Tipo de publicación: Artículo de Revista

 DOI: 10.1021/acs.nanolett.2c00496

ISSN: 1530-6984,1530-6992

Url de la publicación: https://doi.org/10.1021/acs.nanolett.2c00496

Autoría

DAS, SUJIT

LAGUTA, VALENTYN

INZANI, KATHERINE

HUANG, WEICHUAN

LIU, JUNJIE

CHATTERJEE, RUCHIRA

MCCARTER, MARGARET R.

SUSARLA, SANDHYA

GRIFFIN, SINÉAD M.

RAMESH, RAMAMOORTHY