Emergent electromagnetic induction beyond room temperature

Abstract

Emergent electromagnetic induction based on electrodynamics of noncollinear spin states may enable dramatic miniaturization of inductor elements widely used in electric circuits, yet many issues are to be solved toward application. One such problem is how to increase working temperature. We report the large emergent electromagnetic induction achieved around and above room temperature based on short-period ($\le$ 3 nm) spin-spiral states of a metallic helimagnet ${\mathrm{YMn}}_6{\mathrm{Sn}}_6$. The observed inductance value $L$ and its sign are observed to vary to a large extent, depending not only on the spin helix structure controlled by temperature and magnetic field but also on the current density. The present finding on room-temperature operation and possible sign control of $L$ may provide a new step toward realizing microscale quantum inductors.

19 pages, 6 figures

References in corpus (3)

• Topological magnon bands in a room temperature Kagome magnet
• Electromagnetic response in spiral magnets and emergent inductance
• Intrinsic and extrinsic tunability of Rashba spin-orbit coupled emergent inductors

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• Reconsidering the nonlinear emergent inductance: time-varying Joule heating and its impact on the AC electrical response
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• Symmetry of the emergent inductance tensor exhibited by magnetic textures
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• Emergent inductors in non-helical magnets
• Diverse Magnetic Phase Diagram and Anomalous Hall Effect in Antiferromagetic LuMn${}_6$Sn${}_6$
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• Unraveling the dynamics of magnetization in topological insulator-ferromagnet heterostructures via spin-orbit torque
• Emergent impedance due to antiferromagnetic domain wall dynamics
• Emergent Inductance from Chiral Orbital Currents in a Bulk Ferrimagnet
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