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Understanding the speed limits of magnetism

Total Cost €


EC-Contrib. €






Project "MAGNETIC-SPEED-LIMIT" data sheet

The following table provides information about the project.


Organization address
postcode: 10691

contact info
title: n.a.
name: n.a.
surname: n.a.
function: n.a.
email: n.a.
telephone: n.a.
fax: n.a.

 Coordinator Country Sweden [SE]
 Total cost 1˙967˙755 €
 EC max contribution 1˙967˙755 € (100%)
 Programme 1. H2020-EU.1.1. (EXCELLENT SCIENCE - European Research Council (ERC))
 Code Call ERC-2016-STG
 Funding Scheme ERC-STG
 Starting year 2017
 Duration (year-month-day) from 2017-02-01   to  2022-01-31


Take a look of project's partnership.

# participants  country  role  EC contrib. [€] 
1    STOCKHOLMS UNIVERSITET SE (STOCKHOLM) coordinator 1˙749˙005.00
2    UNIVERSITA CA' FOSCARI VENEZIA IT (VENEZIA) participant 218˙750.00


 Project objective

While the origin of magnetic order in condensed matter is in the exchange and spin-orbit interactions, with time scales in the subpicosecond ranges, it has been long believed that magnetism could only be manipulated at nanosecond rates, exploiting dipolar interactions with external magnetic fields. However, in the past decade researchers have been able to observe ultrafast magnetic dynamics at its intrinsic time scales without the need for magnetic fields, thus revolutionising the view on the speed limits of magnetism. Despite many achievements in ultrafast magnetism, the understanding of the fundamental physics that allows for the ultrafast dissipation of angular momentum is still only partial, hampered by the lack of experimental techniques suited to fully explore these phenomena. However, the recent appearance of two new types of coherent radiation, single-cycle THz pulses and x-rays generated at free electron lasers (FELs), has provided researchers access to a whole new set of capabilities to tackle this challenge. This proposal suggests using these techniques to achieve an encompassing view of ultrafast magnetic dynamics in metallic ferromagnets, via the following three research objectives: (a) to reveal ultrafast dynamics driven by strong THz radiation in several magnetic systems using table-top femtosecond lasers; (b) to unravel the contribution of lattice dynamics to ultrafast demagnetization in different magnetic materials using the x-rays produced at FELs and (c) to directly image ultrafast spin currents by creating femtosecond movies with nanometre resolution. The proposed experiments are challenging and explore unchartered territories, but if successful, they will advance the understanding of the speed limits of magnetism, at the time scales of the exchange and spin-orbit interactions. They will also open up for future investigations of ultrafast magnetic phenomena in materials with large electronic correlations or spin-orbit coupling.


year authors and title journal last update
List of publications.
2020 Lukas Alber, Valentino Scalera, Vivek Unikandanunni, Daniel Schick, Stefano Bonetti
NTMpy: An open source package for solving coupled parabolic differential equations in the framework of the three-temperature model
published pages: , ISSN: , DOI:
2019 Kumar Neeraj, Nilesh Awari, Sergey Kovalev, Debanjan Polley, Nanna Zhou Hagström, Sri Sai Phani Kanth Arekapudi, Anna Semisalova, Kilian Lenz, Bertram Green, Jan-Christoph Deinert, Igor Ilyakov, Min Chen, Mohammed Bowatna, Valentino Scalera, Massimiliano d\'Aquino, Claudio Serpico, Olav Hellwig, Jean-Eric Wegrowe, Michael Gensch, Stefano Bonetti
Experimental evidence of inertial dynamics in ferromagnets
published pages: , ISSN: , DOI:
2019 Hudl, Matthias; d\'Aquino, Massimiliano; Pancaldi, Matteo; Yang, See-Hun; Samant, Mahesh G.; Parkin, Stuart S. P.; Dürr, Hermann A.; Serpico, Claudio; Hoffmann, Matthias C.; Bonetti, Stefano
Nonlinear magnetization dynamics driven by strong terahertz fields
published pages: , ISSN: , DOI:
1 2019-10-03
2019 Peter Salén, Martina Basini, Stefano Bonetti, János Hebling, Mikhail Krasilnikov, Alexey Y. Nikitin, Georgii Shamuilov, Zoltán Tibai, Vitali Zhaunerchyk, Vitaliy Goryashko
Matter manipulation with extreme terahertz light: Progress in the enabling THz technology
published pages: , ISSN: 0370-1573, DOI: 10.1016/j.physrep.2019.09.002
Physics Reports 2019-10-03
2018 Debanjan Polley, Matteo Pancaldi, Matthias Hudl, Paolo Vavassori, Sergei Urazhdin, Stefano Bonetti
THz-driven demagnetization with perpendicular magnetic anisotropy: towards ultrafast ballistic switching
published pages: 84001, ISSN: 0022-3727, DOI: 10.1088/1361-6463/aaa863
Journal of Physics D: Applied Physics 51/8 2019-06-13
2018 Polley, Debanjan; Hagström, Nanna Zhou; Schmising, Clemens von Korff; Eisebitt, Stefan; Bonetti, Stefano
Terahertz magnetic field enhancement in an asymmetric spiral metamaterial
published pages: , ISSN: , DOI:
arXiv preprint 1 2019-06-13
2018 Matteo Pancaldi, Ryan Freeman, Matthias Hudl, Matthias C. Hoffmann, Sergei Urazhdin, Paolo Vavassori, Stefano Bonetti
Anti-reflection coating design for metallic terahertz meta-materials
published pages: 2917, ISSN: 1094-4087, DOI: 10.1364/OE.26.002917
Optics Express 26/3 2019-06-13

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