Please use this identifier to cite or link to this item:
Full metadata record
DC FieldValueLanguage
dc.contributor.authorKumar, Durgeshen_US
dc.contributor.authorSengupta, Pinakien_US
dc.contributor.authorSbiaa, Rachiden_US
dc.contributor.authorPiramanayagam, S. N.en_US
dc.identifier.citationKumar, D., Sengupta, P., Sbiaa, R., & Piramanayagam, S. N. (2020). Spin transfer torque induced domain wall oscillations in ferromagnetic nanowire with a nanoscale Dzyaloshinskii–Moriya interaction region. Journal of Magnetism and Magnetic Materials, 507, 166807-. doi:10.1016/j.jmmm.2020.166807en_US
dc.description.abstractThe interfacial Dzyaloshinskii–Moriya Interaction (iDMI) in ferromagnetic (FM)/heavy metal (HM) structures has been under intense investigation due to the interesting observation of many novel chiral structures such as domain walls (DWs) and skyrmions. In all the studies so far, the iDMI is present in the whole of the FM layer. In this study, we report our investigations on a FM nanowire where iDMI is confined to a nanoscale region. We observe that the local modulation of magnetic properties results in oscillations of DWs under the influence of spin-transfer torque (STT). For such oscillations, the nanoscale iDMI acts as a restoring force. We have studied the dependence of oscillation frequency upon the current density, geometrical parameter (width of nanoscale iDMI region), strength of iDMI and magnetic parameters such as anisotropy constant (Ku), exchange constant (A) and saturation magnetization (Ms). The variation in the above-mentioned parameters results in the tunability of oscillation frequency within a few GHz. Moreover, the amplitude of oscillations is also tunable with the width of the nanoscale iDMI region. These observations make this study potentially useful for applications in neuromorphic computing.en_US
dc.relationMOE2018-T1-001- 021en_US
dc.relation.ispartofJournal of Magnetism and Magnetic Materialsen_US
dc.rights© 2020 Elsevier B.V. All rights reserved. This paper was published in Journal of Magnetism and Magnetic Materials and is made available with permission of Elsevier B.V.en_US
dc.titleSpin transfer torque induced domain wall oscillations in ferromagnetic nanowire with a nanoscale Dzyaloshinskii–Moriya interaction regionen_US
dc.typeJournal Articleen
dc.contributor.schoolSchool of Physical and Mathematical Sciencesen_US
dc.description.versionAccepted versionen_US
dc.subject.keywordsDomain Wall Oscillationsen_US
dc.subject.keywordsSpin Transfer Torqueen_US
item.fulltextWith Fulltext-
Appears in Collections:SPMS Journal Articles
Files in This Item:
File Description SizeFormat 
DMI DW Oscillation paper_rev2.pdf
  Until 2022-12-31
Accepted version of paper1.37 MBAdobe PDFUnder embargo until Dec 31, 2022

Citations 50

Updated on Mar 5, 2021

Page view(s)

Updated on May 23, 2022

Download(s) 50

Updated on May 23, 2022

Google ScholarTM




Items in DR-NTU are protected by copyright, with all rights reserved, unless otherwise indicated.