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Physikalisches Kolloquium & TRR 227: Prof. Hermann Dürr - Ultrafast spin-lattice dynamics in magnetic materials

17.06.2022 | 15:15
Prof. Hermann Dürr

Prof. Hermann Dürr
Bildquelle: Uppsala Universitet

Snapshot of soliton-like spin motion in an FePt nanoparticle of 10 nm size following laser excitation

Snapshot of soliton-like spin motion in an FePt nanoparticle of 10 nm size following laser excitation

Professor Hermann Dürr leitet das FREIA Labor am Fachbereich Physik und Astronomie an der Uppsala Universität. Der Kolloquiumstermin wird gemeinsam mit dem TRR 227 "Ultrafast Spin Dynamics" veranstaltet.

The dynamics of spins in magnetic materials initiated by a sub-picosecond laser pulse is an emerging and rapidly developing field in fundamental magnetism. The goal of this research is to understand and ultimately control the energy and angular momentum transfer processes in the laser-excited non-equilibrium state.

The magneto-elastic coupling of phonon and magnon modes offers novel functionality for spintronics applications in information technology. Magnon polarons can form via magnetoelastic coupling, circularly polarized phonons can form and transport angular momentum or phonons can be used to generate spin currents in metallic contacts. However, many of these phenomena are currently only demonstrated at GHz frequencies and micrometer dimensions.

I will give an overview how x-ray free electron lasers will enable us to explore the potential of moving towards THz frequencies and nanometer dimensions that are far more attractive for applications.

Zeit & Ort

17.06.2022 | 15:15

Hörsaal A (Raum 1.3.14)
Fachbereich Physik
Arnimallee 14
14195 Berlin

Weitere Informationen

In geschlossenen Räumen gilt die dringende Empfehlung zum Tragen einer FFP2-Maske.

Schlagwörter

  • Dynamik von Spins
  • Hermann Dürr
  • Laserphysik
  • magnetische Materialien
  • physikalisches Kolloquium
  • Spintronik
  • TRR 227
  • Ultrakurzzeitphysik
  • ultraschnelle Spindynamik
  • Uppsala Universität