Back to Search
Start Over
Real-time observation of non-equilibrium phonon-electron energy and angular momentum flow in laser-heated nickel.
- Source :
-
Science Advances . 2/2/2024, Vol. 10 Issue 5, p1-8. 8p. - Publication Year :
- 2024
-
Abstract
- Identifying the microscopic nature of non-equilibrium energy transfer mechanisms among electronic, spin, and lattice degrees of freedom is central to understanding ultrafast phenomena such as manipulating magnetism on the femtosecond timescale. Here, we use time-and angle-resolved photoemission spectroscopy to go beyond the often-used ensemble-averaged view of non-equilibrium dynamics in terms of quasiparticle temperature evolutions. We show for ferromagnetic Ni that the non-equilibrium electron and spin dynamics display pronounced variations with electron momentum, whereas the magnetic exchange interaction remains isotropic. This highlights the influence of lattice-mediated scattering processes and opens a pathway toward unraveling the still elusive microscopic mechanism of spin-lattice angular momentum transfer. [ABSTRACT FROM AUTHOR]
Details
- Language :
- English
- ISSN :
- 23752548
- Volume :
- 10
- Issue :
- 5
- Database :
- Academic Search Index
- Journal :
- Science Advances
- Publication Type :
- Academic Journal
- Accession number :
- 175184252
- Full Text :
- https://doi.org/10.1126/sciadv.adj2407