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Manipulating femtosecond spin-orbit torques with laser pulse sequences to control magnetic memory states and ringing

TitleManipulating femtosecond spin-orbit torques with laser pulse sequences to control magnetic memory states and ringing
Publication TypeJournal Article
Year of Publication2015
AuthorsLingos, PC, Wang, J, Perakis, IE
JournalPhysical Review B
Volume91
Pagination195203
Date Published05
Type of ArticleArticle
ISBN Number1098-0121
Accession NumberWOS:000354977400002
Keywordsbrillouin-zone integrations, dynamics, ferromagnetic semiconductors, insulator, many-body, nanostructures, nonlinear-optical response, reversal, Spectroscopy, topological, ultrafast
Abstract

out-of-plane magnetization canting displaying fs magnetic hysteresis, which agrees with switchings measured by the static Hall magnetoresistivity. This fs transverse spin-canting switches direction with magnetic state and laser frequency, which distinguishes it from the longitudinal nonlinear optical and demagnetization effects. We propose that sequences of clockwise or counterclockwise fs spin-orbit torques, photoexcited by shaping two-color laser-pulse sequences analogous to multidimensional nuclear magnetic resonance (NMR) spectroscopy, can be used to timely suppress or enhance magnetic ringing and switching rotation in magnetic memories.

DOI10.1103/PhysRevB.91.195203
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