Anisotropic magnetothermal transport in Co2MnGa thin films
Ritzinger P, Reichlova H, Kriegner D, Markou A, Schlitz R, Lammel M, Scheffler D, Park GH, Thomas A, Streda P, Felser C, Goennenwein STB, Vyborny K (2021)
Publication Type: Journal article
Publication year: 2021
Journal
Book Volume: 104
Article Number: 094406
Journal Issue: 9
DOI: 10.1103/PhysRevB.104.094406
Abstract
Ferromagnetic Co2MnGa has recently attracted significant attention due to effects related to the nontrivial topology of its band structure. However, a systematic study of canonical magnetogalvanic transport effects is missing. Focusing on high quality thin films, here we systematically measure anisotropic magnetoresistance (AMR) and its thermoelectric counterpart anisotropic magnetothermopower (AMTP). We model the AMR data by free energy minimization within the Stoner-Wohlfarth formalism and conclude that both crystalline and noncrystalline components of this magnetotransport phenomenon are present in Co2MnGa. The AMTP is, in comparison to the AMR, large in relative terms, since the Seebeck coefficient ς0 is small, which is discussed in the context of the Mott rule and of phonon drag. A further analysis of AMTP components is presented.
Involved external institutions
Max-Planck-Institut für Chemische Physik fester Stoffe (MPI CPfS) / Max Planck Institute for Chemical Physics of Solids
Germany (DE)
Technische Universität Dresden
Germany (DE)
Leibniz-Institut für Festkörper- und Werkstoffforschung Dresden e.V. (IFW) / Leibniz Institute for Solid State and Materials Research Dresden
Germany (DE)
Institute of Physics of the Czech Academy of Sciences / Fyzikální ústav Akademie věd České republiky (FZU)
Czech Republic (CZ)
Germany (DE)
Technische Universität Dresden
Germany (DE)
Leibniz-Institut für Festkörper- und Werkstoffforschung Dresden e.V. (IFW) / Leibniz Institute for Solid State and Materials Research Dresden
Germany (DE)
Institute of Physics of the Czech Academy of Sciences / Fyzikální ústav Akademie věd České republiky (FZU)
Czech Republic (CZ)
How to cite
APA:
Ritzinger, P., Reichlova, H., Kriegner, D., Markou, A., Schlitz, R., Lammel, M.,... Vyborny, K. (2021). Anisotropic magnetothermal transport in Co2MnGa thin films. Physical Review B, 104(9). https://doi.org/10.1103/PhysRevB.104.094406
MLA:
Ritzinger, Philipp, et al. "Anisotropic magnetothermal transport in Co2MnGa thin films." Physical Review B 104.9 (2021).
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