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Research

The MagneDyn Project 

Manipulation of magnetic order with light is an important topic intensively studied in modern magnetism [1,2,3,4] (see figure below). 
In particular, the strongly non-equilibrium conditions developed in magnetic materials following excitation by intense femtosecond laser pulses represent a hot research subject that has attracted continuous growing interest over the last two decades [1]. 
Since this strong non-equilibrium state evolve in the ultrafast (<1ps) temporal regime, the conventional description of magnetic phenomena in the framework  of classical thermodynamics is no longer valid.
As a result, the ultrafast channels for transferring energy and 
angular momentum between photons, electrons, spins, and phonons remain elusive and a subject of debate. The MagneDyn beamline is a groundbreaking tool in the field of ultrafast magneto-dynamical studies by offering a combination of pump-probe optical and x-ray spectroscopies[2]
It is possible to perform studies of time resolved X-ray Magnetic Circular Dichroism (tr-XMCD), Resonant Inelastic X-ray Scattering (tr-RIXS) and Magneto Optical Kerr Effect (tr-MOKE) as a function of sample temperature (from 300K down to 10K) and in high magnetic fields (2.5 Tesla). 

1. Kirilyuk A. et al, Rev. Mod. Phys. 82, 2731 (2010)
2. Parmigiani F., Malvestuto M., "Magneto dynamical studies at Fermi@Elettra. A white paper." (2011)
3. Stamm C. et al, Nat. Mat. 6, 740 (2007); Bartel et al., Appl Phys Lett 90, 162503 (2007); Boeglin C. et al, Nature (London) 465, 458-461 (2010).
4. Mathias S. et al, J Elect Spec Rel Phen 189, 164 (2013)


 

Ultima modifica il Mercoledì, 09 Ottobre 2019 06:50