Thema der Dissertation:
Boltzmann approach to coupled spin and heat currents
Boltzmann approach to coupled spin and heat currents
Abstract: The goal of this thesis is to set up a theoretical foundation for a description of the mutual interaction of lattice and spin waves based on the Boltzmann transport equation. It is crucial to understand spin-caloric effects as the spin Seebeck effect in ferromagnetic insulators on a microscopic level. In the first part, we explain how a phenomenological model of weakly interacting spin and lattice waves can be used to explain the magnetic-field dependence of the spin Seebeck effect at high tem- peratures when inelastic scattering dominates the relaxation of the lattice and spin waves. In the second part, we examine the influence of strong spin-orbit coupling that leads to hybridized spin-lattice transport, predominantly at low temperatures. Finally, we bridge the gap between coherent and incoherent regimes.
Zeit & Ort
24.02.2022 | 14:00
Hörsaal A (1.3.14)
Fachbereich Physik, Arnimallee 14, 14195 Berlin
*Die Teilnahme ist nur unter der strikten Einhaltung der 3G Regelungen möglich*