Non-volatile spin transport in a single domain multiferroic
Authors:
Sajid Husain,
Isaac Harris,
Peter Meisenheimer,
Sukriti Mantri,
Xinyan Li,
Maya Ramesh,
Piush Behera,
Hossein Taghinejad,
Jaegyu Kim,
Pravin Kavle,
Shiyu Zhou,
Tae Yeon Kim,
Hongrui Zhang,
Paul Stephenson,
James G. Analytis,
Darrell Schlom,
Sayeef Salahuddin,
Jorge Íñiguez-González,
Bin Xu,
Lane W. Martin,
Lucas Caretta,
Yimo Han,
Laurent Bellaiche,
Zhi Yao,
Ramamoorthy Ramesh
Abstract:
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 BiFeO$_3$ the coupling between antiferromagnetic and polar order imposes yet another boun…
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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 BiFeO$_3$ 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.
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Submitted 6 April, 2024;
originally announced April 2024.
Nonvolatile Electric Field Control of Thermal Magnons in the Absence of an Applied Magnetic Field
Authors:
Eric Parsonnet,
Lucas Caretta,
Vikram Nagarajan,
Hongrui Zhang,
Hossein Taghinejad,
Piush Behera,
Xiaoxi Huang,
Pravin Kavle,
Abel Fernandez,
Dmitri Nikonov,
Hai Li,
Ian Young,
James Analytis,
Ramamoorthy Ramesh
Abstract:
Spin transport through magnetic insulators has been demonstrated in a variety of materials and is an emerging pathway for next-generation spin-based computing. To modulate spin transport in these systems, one typically applies a sufficiently strong magnetic field to allow for deterministic control of magnetic order. Here, we make use of the well-known multiferroic magnetoelectric, BiFeO3, to demon…
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Spin transport through magnetic insulators has been demonstrated in a variety of materials and is an emerging pathway for next-generation spin-based computing. To modulate spin transport in these systems, one typically applies a sufficiently strong magnetic field to allow for deterministic control of magnetic order. Here, we make use of the well-known multiferroic magnetoelectric, BiFeO3, to demonstrate non-volatile, hysteretic, electric-field control of thermally excited magnon current in the absence of an applied magnetic field. These findings are an important step toward magnon-based devices, where electric-field-only control is highly desirable.
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Submitted 23 August, 2022; v1 submitted 30 March, 2022;
originally announced March 2022.