Antiferromagnets have attracted significant attention in the field of magnonics, as promising candidates for ultralow-energy carriers for information transfer for future computing. The role of crystalline orientation distribution on magnon transport has received very little attention. In multiferroics such as BiFeO3 the coupling between antiferromagnetic and polar order imposes yet another boundary condition on spin transport. Thus, understanding the fundamentals of spin transport in such systems requires a single domain, a single crystal. We show that through Lanthanum(La) substitution, a single ferroelectric domain can be engineered with a stable, single-variant spin cycloid, controllable by an electric field. The spin transport in such a single domain displays a strong anisotropy, arising from the underlying spin cycloid lattice. Our work shows a pathway to understand the fundamental origins of spin transport in such a single domain multiferroic.
@article{arxiv.2404.04746,
title = {Non-volatile spin transport in a single domain multiferroic},
author = {Sajid Husain and Isaac Harris and Peter Meisenheimer and Sukriti Mantri and Xinyan Li and Maya Ramesh and Piush Behera and Hossein Taghinejad and Jaegyu Kim and Pravin Kavle and Shiyu Zhou and Tae Yeon Kim and Hongrui Zhang and Paul Stephenson and James G. Analytis and Darrell Schlom and Sayeef Salahuddin and Jorge Íñiguez-González and Bin Xu and Lane W. Martin and Lucas Caretta and Yimo Han and Laurent Bellaiche and Zhi Yao and Ramamoorthy Ramesh},
journal= {arXiv preprint arXiv:2404.04746},
year = {2024}
}