Project Details
Projekt
Thermal transport and domain structure
Subject Area
Experimental Condensed Matter Physics
Term
from 2011 to 2018
Project identifier
Deutsche Forschungsgemeinschaft (DFG) - Project number 198132664
Final Report Year
2019
Final Report Abstract
The main of this project was to gain an understanding of spin-caloric transport phenomena, mostly the spin Seebeck effect with a particular focus on possible parasitic effects and the relevance of ferromagnetic domains. Our results suggest that the previously reported signatures of the spin Seebeck effect can be explained by conventional planar and anomalous Nernst effect responses in the presence of inevitable parasitic temperature gradients. This major finding of the project lead to readjusting its focus to address general transport phenomena of Heusler materials and to advance quantitative Kerr microscopy.
Publications
- Half-metallic ferromagnetism with unexpectedly small spin splitting in the Heusler compound Co2FeSi, Phys. Rev. Lett. 110, 066601 (2013)
D. Bombor, C. G. F. Blum, O. Volkonskiy, S. Rodan, S. Wurmehl, C. Hess, B. Büchner
(See online at https://doi.org/10.1103/PhysRevLett.110.066601) - Spin density wave order and fluctuations in Mn3Si: a transport study, Phys. Rev. B 90, 134411 (2014)
F. Steckel, S. Rodan, R. Hermann, C. G. F. Blum, S. Wurmehl, B. Büchner, C. Hess
(See online at https://doi.org/10.1103/PhysRevB.90.134411) - Thermoelectric effects and magnetic anisotropy of Ga1-xMnxAs thin films, Phys. Rev. B 90, 104423 (2014)
I. V. Soldatov, N. Panarina, C. Hess, L. Schultz, R. Schäfer
(See online at https://doi.org/10.1103/PhysRevB.90.104423) - Advances in quantitative Kerr microscopy, Phys. Rev. B 95, 014426 (2017)
I.V. Soldatov and R. Schäfer
(See online at https://doi.org/10.1103/PhysRevB.95.014426) - Heat transport of cuprate-based low-dimensional quantum magnets with strong exchange coupling, Physics Reports (2019)
C. Hess
(See online at https://doi.org/10.1016/j.physrep.2019.02.004)
