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

T.A. Ostler (), J. Barker, R.F.L. Evans, R.W. Chantrell, U. Atxitia, O. Chubykalo-Fesenko, S. El Moussaoui, L. Le Guyader, E. Mengotti, L.J. Heyderman, F. Nolting, A. Tsukamoto, A. Itoh, D. Afanasiev, B.A. Ivanov, A.M. Kalashnikova, K. Vahaplar, J. Mentink, A. Kirilyuk, Th. Rasing and A.V. Kimel
Additional contact information
T.A. Ostler: University of York, York YO10 5DD, UK.
J. Barker: University of York, York YO10 5DD, UK.
R.F.L. Evans: University of York, York YO10 5DD, UK.
R.W. Chantrell: University of York, York YO10 5DD, UK.
U. Atxitia: Instituto de Ciencia de Materiales de Madrid, CSIC, Cantoblanco, 28049 Madrid, Spain.
O. Chubykalo-Fesenko: Instituto de Ciencia de Materiales de Madrid, CSIC, Cantoblanco, 28049 Madrid, Spain.
S. El Moussaoui: Paul Scherrer Institut, CH-5232 PSI-Villigen, Switzerland.
L. Le Guyader: Paul Scherrer Institut, CH-5232 PSI-Villigen, Switzerland.
E. Mengotti: Paul Scherrer Institut, CH-5232 PSI-Villigen, Switzerland.
L.J. Heyderman: Paul Scherrer Institut, CH-5232 PSI-Villigen, Switzerland.
F. Nolting: Paul Scherrer Institut, CH-5232 PSI-Villigen, Switzerland.
A. Tsukamoto: College of Science and Technology, Nihon University, 7-24-1 Funabashi, Chiba, Japan.
A. Itoh: College of Science and Technology, Nihon University, 7-24-1 Funabashi, Chiba, Japan.
D. Afanasiev: Institute of Magnetism, NASU
B.A. Ivanov: Institute of Magnetism, NASU
A.M. Kalashnikova: Ioffe Physical-Technical Institute of the Russian Academy of Sciences, 194021 St Petersburg, Russia.
K. Vahaplar: Radboud University Nijmegen, Institute for Molecules and Materials, 6525 AJ Nijmegen, The Netherlands.
J. Mentink: Radboud University Nijmegen, Institute for Molecules and Materials, 6525 AJ Nijmegen, The Netherlands.
A. Kirilyuk: Radboud University Nijmegen, Institute for Molecules and Materials, 6525 AJ Nijmegen, The Netherlands.
Th. Rasing: Radboud University Nijmegen, Institute for Molecules and Materials, 6525 AJ Nijmegen, The Netherlands.
A.V. Kimel: Radboud University Nijmegen, Institute for Molecules and Materials, 6525 AJ Nijmegen, The Netherlands.

Nature Communications, 2012, vol. 3, issue 1, 1-6

Abstract: 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.

Date: 2012
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DOI: 10.1038/ncomms1666

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