Multiscale dynamics of helicity-dependent all-optical magnetization reversal in ferromagnetic Co/Pt multilayers

Medapalli, Rajasekhar; Afanasiev, D.; K. Kim, D.; Quessab, Yassine; Manna, Sohini; Montoya, Sergio; Kirilyuk, A.; Rasing, Th.; V. Kimel, A.; E. Fullerton, Eric

doi:10.1103/physrevb.96.224421

Public

Multiscale dynamics of helicity-dependent all-optical magnetization reversal in ferromagnetic Co/Pt multilayers

Shared by NobleBlocks on Dec 15, 2017 • 12:00 AM UTC

Authors:

Rajasekhar Medapalli

D. Afanasiev

D. K. Kim

Abstract

Time-resolved magneto-optical imaging reveals that the dynamics of the helicity-dependent all-optical switching (HD-AOS) of Co/Pt ferromagnetic multilayers occurs on the time scales from nanoseconds to seconds. We find HD-AOS proceeds by two stages. First, for an optimized laser fluence, the ultrash...

Subject

Helicity

Magnetization

Condensed matter physics

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