Electric Field Switching of Magnon Spin Current in a Compensated Ferrimagnet
arXiv:2311.15183 · doi:10.1002/adma.202312137
Abstract
Manipulation of directional magnon propagation, known as magnon spin current, is essential for developing magnonic memory and logic devices featuring nonvolatile functionalities and ultralow power consumption. Magnon spin current can usually be modulated by magnetic field or current-induced spin torques. However, these approaches may lead to energy dissipation caused by Joule heating. Electric-field switching of magnon spin current without charge current is highly desired but very challenging to realize. By integrating magnonic and piezoelectric materials, we demonstrate manipulation of the magnon spin current generated by the spin Seebeck effect in the ferrimagnetic insulator Gd3Fe5O12 (GdIG) film on a piezoelectric substrate. We observe reversible electric-field switching of magnon polarization without applied charge current. Through strain-mediated magnetoelectric coupling, the electric field induces the magnetic compensation transition between two magnetic states of the GdIG, resulting in its magnetization reversal and the simultaneous switching of magnon spin current. Our work establishes a prototype material platform that pave the way for developing magnon logic devices characterized by all electric field reading and writing and reveals the underlying physics principles of their functions.
References in corpus (9)
- Electric-field coupling to spin waves in a centrosymmetric ferrite
- First-Principles Study of Exchange Interactions of Yttrium Iron Garnet
- Giant magnon spin conductivity approaching the two-dimensional transport regime in ultrathin yttrium iron garnet films
- Control of nonlocal magnon spin transport via magnon drift currents
- Electrically Switchable van der Waals Magnon Valves
- Voltage control of magnon spin currents in antiferromagnetic Cr2O3
- Electrically induced strong modulation of magnons transport in ultrathin magnetic insulator films
- Magnon hybridization in ferrimagnetic heterostructures
- Hysteresis and training effect in the electric control of spin current in Pt/Y3Fe5O12 heterostructures