Tunable negligible-loss energy transfer between dipolar-coupled magnetic disks by stimulated vortex gyration.

Scientific Reports
Hyunsung JungSang-Koog Kim

Abstract

A wide variety of coupled harmonic oscillators exist in nature. Coupling between different oscillators allows for the possibility of mutual energy transfer between them and the information-signal propagation. Low-energy input signals and their transport with negligible energy loss are the key technological factors in the design of information-signal processing devices. Here, utilizing the concept of coupled oscillators, we experimentally demonstrated a robust new mechanism for energy transfer between spatially separated dipolar-coupled magnetic disks - stimulated vortex gyration. Direct experimental evidence was obtained by a state-of-the-art experimental time-resolved soft X-ray microscopy probe. The rate of energy transfer from one disk to the other was deduced from the two normal modes' frequency splitting caused by dipolar interaction. This mechanism provides the advantages of tunable energy transfer rates, low-power input signals and negligible energy loss in the case of negligible intrinsic damping. Coupled vortex-state disks might be implemented in applications for information-signal processing.

References

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Citations

Sep 15, 2016·Scientific Reports·Saswati BarmanAnjan Barman
Jul 24, 2013·Scientific Reports·Dong-Soo HanSang-Koog Kim
Feb 19, 2013·Scientific Reports·Young-Sang YuSang-Koog Kim
Feb 18, 2014·Scientific Reports·D KumarA Barman
Jul 27, 2012·Scientific Reports·Sung Chul LeeU-In Chung
Jan 18, 2017·Journal of Physics. Condensed Matter : an Institute of Physics Journal·Stefano Bonetti
May 2, 2014·Nature Communications·J F PulecioY Zhu
Mar 5, 2016·Scientific Reports·Max HänzeGuido Meier
Dec 29, 2012·Nature Communications·S JainS D Bader
Aug 21, 2015·Reports on Progress in Physics·Peter Fischer, Hendrik Ohldag
Oct 30, 2015·Nanotechnology·D NissenM Albrecht
Sep 28, 2017·Physical Review Letters·Se Kwon Kim, Yaroslav Tserkovnyak
May 18, 2013·Physical Review Letters·Sebastian WintzJürgen Fassbender
May 21, 2021·Nano Letters·Zhenghua LiChenglin Yan
Apr 27, 2012·ACS Nano·Hyunsung JungSang-Koog Kim

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Methods Mentioned

BETA
X-ray
circular dichroism

Software Mentioned

OOMMF

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