Detailseite
Projekt
FOR 5844: Chirale Phononen für die Spintronik_ChiPS
Fachliche Zuordnung
Physik
Förderung
Förderung seit 2025
Projektkennung
Deutsche Forschungsgemeinschaft (DFG) - Projektnummer 541503763
Phonons are the fundamental lattice excitations in crystalline materials and usually categorized into acoustic and optical branches. Only recently, it was realized that phonons can also be chiral, carrying angular momentum. Such phonons exist naturally in materials with broken inversion symmetry [21-23, 65] but can also be generated in symmetric magnetic materials by ultrafast demagnetization or via spin-phonon coupling [*1, 66]. These novel developments trigger a set of fundamental questions related to the generation, dynamics, transport and detection of phonons with angular momentum or chiral character, which we will address in this proposed RU. In particular, we aim to 1) understand the basic length and time scales of chiral phonons, 2) understand the mechanisms behind the creation, detection and decay of phonons with angular momentum, 3) understand chiral transport phenomena, 4) understand chiral phonons and their hybridization with other solid excitations, 5) understand and exploit magnon-phonon interaction in nanostructures with the aim to develop tailored phononic environments supporting chiral phonons, 6) assess the potential of phonon-based spintronics as a novel tool for information science.
DFG-Verfahren
Forschungsgruppen
Projekte
- Beobachtung von chiralen Phononen in Raum und Zeit (Antragsteller Baum, Peter )
- Drehimpulstransport in Mikro- und Nanostrukturen (Antragsteller Hübl, Hans )
- Drehimpulsübertragung zwischen Magnonen und Phononen in Mikrostrukturen (Antragstellerin Viola Kusminskiy, Silvia )
- Koordinationsfonds (Antragsteller Nowak, Ulrich )
- Magnetische Materialien für chirale Phononen (Antragsteller Albrecht, Manfred )
- Modellierung der Spin-Gitter Dynamik (Antragsteller Nowak, Ulrich )
- P4: Ab-initio-Beschreibung der chiralen Phononen- und Spin-Kopplung (Antragstellerin Sharma, Ph.D., Sangeeta )
- Pumpen von chiralen Phononen (Antragsteller Gönnenwein, Sebastian )
- Ultraschnelle Erzeugung, Ausbreitung und Detektion von chiralen Phononen (Antragsteller Kampfrath, Tobias )
Sprecher
Professor Dr. Ulrich Nowak
