2026-06-17T23:35:45Zhttps://riubu.ubu.es/oai/requestoai:riubu.ubu.es:10259/57112024-07-25T07:23:06Zcom_10259_9476com_10259.4_106com_10259_2604col_10259_9477
Self-consistent description of spin-phonon dynamics in ferromagnets
Nieves Cordones, Pablo
Serantes, D.
Chubykalo Fesenko, O.
Several recently reported exciting phenomena such as spin caloritronics or ultrafast laser-induced spin dynamics
involve the action of temperature on spin dynamics. However, the inverse effect of magnetization dynamics on
temperature change is very frequently ignored. Based on the density matrix approach, in this work we derive
a self-consistent model for describing the magnetization and phonon temperature dynamics in ferromagnets
in the framework of the quantum Landau-Lifshitz-Bloch equation. We explore potential applicability of our
approach for two cases, inspired by magnetocaloric effect and magnetic fluid hyperthermia. In the first case, the
spin-phonon dynamics is governed by the longitudinal relaxation in bulk systems close to the Curie temperature;
while in the second case it is described by the transverse relaxation during the hysteresis cycle of individual
nanoparticles well below the Curie temperature.
2021-04-16
2021-04-16
2016-07
info:eu-repo/semantics/article
2469-9950
http://hdl.handle.net/10259/5711
10.1103/PhysRevB.94.014409
2469-9969
eng
Physical Review B. 2016, V. 94, n. 1, 014111
https://doi.org/10.1103/PhysRevB.94.014409
info:eu-repo/semantics/openAccess
American Physical Society