Collective effects and instabilities of a magnon gas
(A07)
Subject Area
Experimental Condensed Matter Physics
Term
from 2007 to 2019
Project identifier
Deutsche Forschungsgemeinschaft (DFG) - Project number 31867626
The project addresses fundamental issues in the collective dynamics of magnon gases as model systems of interacting quasi-particles. The main goal is to study the formation of quantum macroscopic states of a magnon gas and to understand the role of multi-particle interactions, including magnon-magnon and magnon-phonon scattering processes, in the properties of these correlated states of matter in comparison with the dynamics of ultracold quantum gases and quantum spin systems investigated in the Transregio 49. This aim will be achieved through Brillouin light scattering investigations of quasi- and non-equilibrium processes in magnon gases whose density is controlled by external electromagnetic pumping and by spin-torque based magnon injection. Two main issues will be addressed, which are spatially confined and dynamically trapped magnon condensates, and coherent interactions and phase transitions in magnon gases and condensates.
DFG Programme
CRC/Transregios
