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Ultrafast manipulation of magnetism in antiferromagnetic transition metal oxides

Prof. Dr. Steve Johnson
ETH Zurich
Institute for Quantum Electronics
Wolfgang-Pauli-Strasse 16
8093 Zurich
www.udg.ethz.ch
+41 44 633 76 31

Project start

April 17, 2012

Project end

January 31, 2015

Goal for 2014

Complete publication on near-IR induced dynamics of NiO. Make first investigations of mid-IR pump induced magnetic dynamics using optical SHG as a probe.

Goals

To use femtosecond magnetic x-ray scattering to understand the mechanism and character of femtosecond laser-induced spin reorientation dynamics in one or more transition metal oxides

Project partners

Urs Staub
SLS WSLA/124
+41 56 310 44 94
Swiss Light Source (SLS)
Paul Scherrer Institut
5232 Villigen PSI

Manfred Fiebig
MFM HCI E 488.1
+41 44 632 26 90
Multifunktionale Ferroische Mat.,
ETH-Hönggerberg,
Wolfgang-Pauli-Str. 10,
8093 Zurich
.

Abstract

This project aims to develop and apply time-resolved x-ray magnetic scattering to the study of magnetic structural dynamics in antiferromagnetic transition metal oxides, with a possible view toward spintronics applications. The success of this project will potentially open up a new class of experiments that will make full use of the short pulse duration and high peak intensity of x-ray free electron lasers to understand and control switching processes in complex magnetic structures.

Publications

T. Kubacka, J. A. Johnson, M. C. Hoffmann, C. Vicario, S. de Jong, P. Beaud, S. Grübel, S.-W. Huang, L. Huber, L. Patthey, Y.-D. Chuang, J. J. Turner, G. L. Dakovski, W.-S. Lee, M. P. Minitti, W. Schlotter, R. G. Moore, C. P. Hauri, S. M. Koohpayeh, V. Scagnoli, G. Ingold, S. L. Johnson, and U. Staub (2014) Large-Amplitude Spin Dynamics Driven by a THz Pulse in Resonance with an Electromagnon. Science 343, 6177 (10.1126/science.1242862)