Ultrafast heating as a sufficient stimulus for magnetization reversal in a ferrimagnet.

OSTLER, Thomas, BARKER, J, EVANS, R F L, CHANTRELL, R W, ATXITIA, U, CHUBYKALO-FESENKO, O, EL MOUSSAOUI, L, MENGOTTI, E, HEYDERMAN, L J, NOLTING, F, TSUKAMOTO, A, ITOH, A, AFANASIEV, D, IVANOV, B a, KALASHNIKOVA, a M, VAHAPLAR, K, MENTINK, J, KIRILYUK, A, RASING, Th and KIMEL, a V (2012). Ultrafast heating as a sufficient stimulus for magnetization reversal in a ferrimagnet. Nature Communications, 3, p. 666.

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Official URL: https://www.nature.com/articles/ncomms1666
Link to published version:: 10.1038/ncomms1666

Abstract

The question of how, and how fast, magnetization can be reversed is a topic of great practical interest for the manipulation and storage of magnetic information. It is generally accepted that magnetization reversal should be driven by a stimulus represented by time-non-invariant vectors such as a magnetic field, spin-polarized electric current, or cross-product of two oscillating electric fields. However, until now it has been generally assumed that heating alone, not represented as a vector at all, cannot result in a deterministic reversal of magnetization, although it may assist this process. Here we show numerically and demonstrate experimentally a novel mechanism of deterministic magnetization reversal in a ferrimagnet driven by an ultrafast heating of the medium resulting from the absorption of a sub-picosecond laser pulse without the presence of a magnetic field.

Item Type: Article
Departments: Arts, Computing, Engineering and Sciences > Engineering and Mathematics
Identification Number: 10.1038/ncomms1666
Depositing User: Thomas Ostler
Date Deposited: 27 Apr 2017 12:57
Last Modified: 27 Apr 2017 13:04
URI: http://shura.shu.ac.uk/id/eprint/15282

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