Magnon Valve Effect Between Two Magnetic Insulators

Abstract

The key physics of the spin valve involves spin-polarized conduction electrons propagating between two magnetic layers such that the device conductance is controlled by the relative magnetization orientation of two magnetic layers. Here, we report the effect of a magnon valve which is made of two ferromagnetic insulators (YIG) separated by a nonmagnetic spacer layer (Au). When a thermal gradient is applied perpendicular to the layers, the inverse spin Hall voltage output detected by a Pt bar placed on top of the magnon valve depends on the relative orientation of the magnetization of two YIG layers, indicating the magnon current induced by spin Seebeck effect at one layer affects the magnon current in the other layer separated by Au. We interpret the magnon valve effect by the angular momentum conversion and propagation between magnons in two YIG layers and conduction electrons in the Au layer. The temperature dependence of magnon valve ratio shows approximately a power law, supporting the above magnon-electron spin conversion mechanism. This work opens a new class of valve structures beyond the conventional spin valves.

arXiv comment13 pages, 4 figures

References in corpus (17)

• Spin torque switching with the giant spin Hall effect of tantalum
• Spin Seebeck insulator
• Room Temperature Reversible Spin Hall Effect
• The building blocks of magnonics
• Measurement of the Spin-Transfer-Torque Vector in Magnetic Tunnel Junctions
• Thermal Spin-Transfer Torques in Magnetoelectronic Devices
• All-magnonic spin-transfer torque and domain wall propagation
• Magnon Mediated Electric Current Drag Across a Ferromagnetic Insulator Layer
• Spin convertance at magnetic interfaces
• Superfluid Spin Transport through Easy-Plane Ferromagnetic Insulators
• Current-Induced Magnetization Reversal in High Magnetic Fields in Co/Cu/Co Nanopillars
• Observation of magnon-mediated current drag in Pt/yttrium iron garnet/Pt(Ta) trilayers
• Observation of huge thermal spin currents in magnetic multilayers
• Josephson and Persistent Spin Currents in Bose-Einstein Condensates of Magnons
• Spin current generation from sputtered Y3Fe5O12 films
• Thermally-driven spin torques in layered magnetic insulators
• Separation of inverse spin Hall effect and anomalous Nernst effect in ferromagnetic metals

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