Objetivo 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. Ámbito científico humanitiesartsmodern and contemporary artcinematographynatural sciencesphysical scienceselectromagnetism and electronicsspintronicsnatural sciencesphysical sciencesopticslaser physics Palabras clave Ultrafast magnetism spin currents lattice dynamics THz radiation x-ray free electron lasers Programa(s) H2020-EU.1.1. - EXCELLENT SCIENCE - European Research Council (ERC) Main Programme Tema(s) ERC-2016-STG - ERC Starting Grant Convocatoria de propuestas ERC-2016-STG Consulte otros proyectos de esta convocatoria Régimen de financiación ERC-STG - Starting Grant Institución de acogida STOCKHOLMS UNIVERSITET Aportación neta de la UEn € 1 749 005,00 Dirección UNIVERSITETSVAGEN 10 10691 Stockholm Suecia Ver en el mapa Región Östra Sverige Stockholm Stockholms län Tipo de actividad Higher or Secondary Education Establishments Enlaces Contactar con la organización Opens in new window Sitio web Opens in new window Participación en los programas de I+D de la UE Opens in new window Red de colaboración de HORIZON Opens in new window Coste total € 1 749 005,00 Beneficiarios (2) Ordenar alfabéticamente Ordenar por aportación neta de la UE Ampliar todo Contraer todo STOCKHOLMS UNIVERSITET Suecia Aportación neta de la UEn € 1 749 005,00 Dirección UNIVERSITETSVAGEN 10 10691 Stockholm Ver en el mapa Región Östra Sverige Stockholm Stockholms län Tipo de actividad Higher or Secondary Education Establishments Enlaces Contactar con la organización Opens in new window Sitio web Opens in new window Participación en los programas de I+D de la UE Opens in new window Red de colaboración de HORIZON Opens in new window Coste total € 1 749 005,00 UNIVERSITA CA' FOSCARI VENEZIA Italia Aportación neta de la UEn € 218 750,00 Dirección DORSODURO 3246 30123 Venezia Ver en el mapa Región Nord-Est Veneto Venezia Tipo de actividad Higher or Secondary Education Establishments Enlaces Contactar con la organización Opens in new window Sitio web Opens in new window Participación en los programas de I+D de la UE Opens in new window Red de colaboración de HORIZON Opens in new window Coste total € 218 750,00