Skyrmion Dynamics in Concentric and Eccentric Nano-Ring Structures

Paikaray, Bibekananda and Kuchibhotla, Mahathi and Murapaka, Chandrasekhar and Haldar, Arabinda (2022) Skyrmion Dynamics in Concentric and Eccentric Nano-Ring Structures. IEEE Transactions on Magnetics, 58 (2). pp. 1-6. ISSN 0018-9464

[img] Text
IEEE_Transactions_on_Magnetics.pdf - Published Version
Restricted to Registered users only

Download (1MB) | Request a copy


Skyrmions are found to be promising for next-generation energy-efficient spintronic applications. Moreover, ultrafast skyrmion dynamics in the gigahertz-band offer an excellent opportunity to exploit such topologically protected nanostructures in high-frequency applications. Here, we present a systematic investigation of the microwave properties of the skyrmions in concentric and eccentric ring structures using micromagnetic simulations. Two gyrotropic modes with clockwise and counterclockwise gyration are observed in skyrmion when excited by an in-plane microwave field. The high-frequency response is found to be enhanced by 3.5 GHz by using a small bias field of 40 mT. The skyrmion dynamics are found to be extremely sensitive to the edge repulsions and a remarkably large frequency shift of 2 GHz of the skyrmion resonance modes is observed by simply varying the position of a skyrmion in an eccentric ring structure. The results are substantiated by directly correlating the observations with inertial mass associated with a skyrmion calculated analytically. The results provide additional functionality of the skyrmions based on their tunable microwave properties which may have potential implications in the field of miniaturized reconfigurable microwave devices. © 1965-2012 IEEE.

[error in script]
IITH Creators:
IITH CreatorsORCiD
Murapaka, Chandrasekhar
Haldar, Arabinda
Item Type: Article
Uncontrolled Keywords: Gyrotropic motion; skyrmion dynamics; skyrmion inertial mass; skyrmion trajectory
Subjects: Others > Metallurgy Metallurgical Engineering
Materials Engineering > Materials engineering
Divisions: Department of Material Science Engineering
Department of Physics
Depositing User: . LibTrainee 2021
Date Deposited: 14 Jul 2022 08:57
Last Modified: 14 Jul 2022 08:57
Publisher URL:
OA policy:
Related URLs:

Actions (login required)

View Item View Item
Statistics for RAIITH ePrint 9692 Statistics for this ePrint Item