Ultrafast optical tuning of ferromagnetism via the carrier density

Masakazu Matsubara (), Alexander Schroer, Andreas Schmehl, Alexander Melville, Carsten Becher, Mauricio Trujillo-Martinez, Darrell G. Schlom, Jochen Mannhart, Johann Kroha and Manfred Fiebig
Additional contact information
Masakazu Matsubara: Tohoku University
Alexander Schroer: Physikalisches Institut, Universität Bonn
Andreas Schmehl: Institut für Physik, Universität Augsburg
Alexander Melville: Cornell University
Carsten Becher: ETH Zurich
Mauricio Trujillo-Martinez: Physikalisches Institut, Universität Bonn
Darrell G. Schlom: Cornell University
Jochen Mannhart: Max Planck Institute for Solid State Research
Johann Kroha: Physikalisches Institut, Universität Bonn
Manfred Fiebig: ETH Zurich

Nature Communications, 2015, vol. 6, issue 1, 1-7

Abstract: Abstract Interest in manipulating the magnetic order by ultrashort laser pulses has thrived since it was observed that such pulses can be used to alter the magnetization on a sub-picosecond timescale. Usually this involves demagnetization by laser heating or, in rare cases, a transient increase of magnetization. Here we demonstrate a mechanism that allows the magnetic order of a material to be enhanced or attenuated at will. This is possible in systems simultaneously possessing a low, tunable density of conduction band carriers and a high density of magnetic moments. In such systems, the thermalization time can be set such that adiabatic processes dominate the photoinduced change of the magnetic order—the three-temperature model for interacting thermalized electron, spin and lattice reservoirs is bypassed. In ferromagnetic Eu1−xGdxO, we thereby demonstrate the strengthening as well as the weakening of the magnetic order by ~10% and within ≤3 ps by optically controlling the magnetic exchange interaction.

Date: 2015
References: Add references at CitEc
Citations: View citations in EconPapers (1)

Downloads: (external link)
https://www.nature.com/articles/ncomms7724 Abstract (text/html)

Related works:
This item may be available elsewhere in EconPapers: Search for items with the same title.

Export reference: BibTeX RIS (EndNote, ProCite, RefMan) HTML/Text

Persistent link: https://EconPapers.repec.org/RePEc:nat:natcom:v:6:y:2015:i:1:d:10.1038_ncomms7724

Ordering information: This journal article can be ordered from
https://www.nature.com/ncomms/

DOI: 10.1038/ncomms7724

Access Statistics for this article

Nature Communications is currently edited by Nathalie Le Bot, Enda Bergin and Fiona Gillespie

More articles in Nature Communications from Nature
Bibliographic data for series maintained by Sonal Shukla () and Springer Nature Abstracting and Indexing ().