The effects of Dzyaloshinskii-Moriya interactions on the ferromagnetic resonance response in nanosized devices

The effects of Dzyaloshinskii-Moriya interactions on the ferromagnetic resonance response in nanosized devices

The effects of Dzyaloshinskii-Moriya interaction (DMI) on the ferromagnetic resonance response are investigated in nanometer-sized disks using 3D micromagnetics with the inclusion of DMI energy. A rich complexity is found in the effects on the spinwave eigenmodes and their behavior when varying para...

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Bibliographic Details
Main Authors: Eason, Kwaku, Feng Kong, Jian, Wei Kho, Zhe, Hin Sim, Cheow, Tran, Michael, Cheng Huang, Jian, Sabino, Maria, Kun He, Shi
Other Authors: School of Physical and Mathematical Sciences
Format: Article
Language:English
Published: 2014
Subjects:
DRNTU::Science::Physics::Atomic physics::Solid state physics
Online Access:https://hdl.handle.net/10356/105169
http://hdl.handle.net/10220/20453
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Institution: Nanyang Technological University
Language: English
Description
Summary:The effects of Dzyaloshinskii-Moriya interaction (DMI) on the ferromagnetic resonance response are investigated in nanometer-sized disks using 3D micromagnetics with the inclusion of DMI energy. A rich complexity is found in the effects on the spinwave eigenmodes and their behavior when varying parameters. Two distinct results are demonstrated: first, unique DMI modes are found to form, instead of the expected modes forming in the absence of DMI and they can be uniquely accessed using field rotation; and second, modal evolution with the DMI parameter involves distinct modal twisting and rotations.

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