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Lee, Ki-Suk
Creative Lab. for Advanced Spin Systems (CLASS)
Research Interests
  • Magnetism, spintronics, spin dynamics, rare-earth free magnet


Ultrafast vortex-core reversal dynamics in ferromagnetic nanodots

DC Field Value Language Lee, Ki-Suk ko Guslienko, Konstantin Y. ko Lee, Jun-Young ko Kim, Sang-Koog ko 2014-10-27T08:37:59Z - 2014-10-27 ko 2007-11 -
dc.identifier.citation PHYSICAL REVIEW B, v.76, no.17, pp.1 - 5 ko
dc.identifier.issn 1098-0121 ko
dc.identifier.uri -
dc.identifier.uri ko
dc.description.abstract To verify the exact underlying mechanism of ultrafast vortex-core reversal as well as the vortex state stability, we conducted numerical calculations of the dynamic evolution of magnetic vortices in Permalloy cylindrical nanodots under an oscillating in-plane magnetic field over a wide range of the field frequency and amplitude. The calculated results reveal different kinds of the nontrivial dynamic responses of vortices to the driving external field, including the vortex-core reversal. In particular, the results offer insight into the 10 ps scale underlying physics of the ultrafast vortex-core reversal driven by small-amplitude (similar to 10 Oe) oscillating in-plane fields. This work also provides fundamentals of how to effectively manipulate the vortex dynamics as well as the dynamical switching of the vortex-core orientation. ko
dc.description.statementofresponsibility open -
dc.language ENG ko
dc.publisher AMER PHYSICAL SOC ko
dc.subject PERMALLOY ko
dc.subject DOTS ko
dc.title Ultrafast vortex-core reversal dynamics in ferromagnetic nanodots ko
dc.type ARTICLE ko
dc.identifier.scopusid 2-s2.0-35848956593 ko
dc.identifier.wosid 000251326600072 ko
dc.type.rims ART ko
dc.description.wostc 62 *
dc.description.scopustc 46 * 2015-05-06 * 2014-10-27 *
dc.identifier.doi 10.1103/PhysRevB.76.174410 ko
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