%0 Journal Article %1 PhysRevB.101.060406 %A Park, Gyu H. %A Reichlova, Helena %A Schlitz, Richard %A Lammel, Michaela %A Markou, Anastasios %A Swekis, Peter %A Ritzinger, Philipp %A Kriegner, Dominik %A Noky, Jonathan %A Gayles, Jacob %A Sun, Yan %A Felser, Claudia %A Nielsch, Kornelius %A Goennenwein, Sebastian T. B. %A Thomas, Andy %D 2020 %I American Physical Society %J Phys. Rev. B %K d %N 6 %P 060406 %R 10.1103/PhysRevB.101.060406 %T Thickness dependence of the anomalous Nernst effect and the Mott relation of Weyl semimetal Co$_2$MnGa thin films %U https://link.aps.org/doi/10.1103/PhysRevB.101.060406 %V 101 %X We report a robust anomalous Nernst effect in $Co_2MnGa$ thin films in the thickness regime between 20 and 50 nm. The anomalous Nernst coefficient varied in the range of −2.0 to −3.0 μV/K at 300 K. We demonstrate that the anomalous Hall and Nernst coefficients exhibit similar behavior and fulfill the Mott relation. We simultaneously measure all four transport coefficients of the longitudinal resistivity, transversal resistivity, Seebeck coefficient, and anomalous Nernst coefficient. We connect the values of the measured and calculated Nernst conductivity by using the remaining three magnetothermal transport coefficients, where the Mott relation is still valid. The intrinsic Berry curvature dominates the transport due to the relation between the longitudinal and transversal transport. Therefore, we conclude that the Mott relationship is applicable to describe the magnetothermoelectric transport in Weyl semimetal $Co_2MnGa$ as a function of film thickness.

@article{PhysRevB.101.060406, abstract = {We report a robust anomalous Nernst effect in $Co_2MnGa$ thin films in the thickness regime between 20 and 50 nm. The anomalous Nernst coefficient varied in the range of −2.0 to −3.0 μV/K at 300 K. We demonstrate that the anomalous Hall and Nernst coefficients exhibit similar behavior and fulfill the Mott relation. We simultaneously measure all four transport coefficients of the longitudinal resistivity, transversal resistivity, Seebeck coefficient, and anomalous Nernst coefficient. We connect the values of the measured and calculated Nernst conductivity by using the remaining three magnetothermal transport coefficients, where the Mott relation is still valid. The intrinsic Berry curvature dominates the transport due to the relation between the longitudinal and transversal transport. Therefore, we conclude that the Mott relationship is applicable to describe the magnetothermoelectric transport in Weyl semimetal $Co_2MnGa$ as a function of film thickness.}, added-at = {2021-06-24T13:26:59.000+0200}, author = {Park, Gyu H. and Reichlova, Helena and Schlitz, Richard and Lammel, Michaela and Markou, Anastasios and Swekis, Peter and Ritzinger, Philipp and Kriegner, Dominik and Noky, Jonathan and Gayles, Jacob and Sun, Yan and Felser, Claudia and Nielsch, Kornelius and Goennenwein, Sebastian T. B. and Thomas, Andy}, biburl = {https://www.bibsonomy.org/bibtex/250d5438e0a0da47e68c949e2438c089b/ctqmat}, day = 19, description = {Phys. Rev. B 101, 060406(R) (2020) - Thickness dependence of the anomalous Nernst effect and the Mott relation of Weyl semimetal ${\mathrm{Co}}_{2}\mathrm{MnGa}$ thin films}, doi = {10.1103/PhysRevB.101.060406}, interhash = {c80030a0c51100d011d2e43d56bda955}, intrahash = {50d5438e0a0da47e68c949e2438c089b}, journal = {Phys. Rev. B}, keywords = {d}, month = feb, number = 6, numpages = {7}, pages = 060406, publisher = {American Physical Society}, timestamp = {2023-10-19T13:37:53.000+0200}, title = {Thickness dependence of the anomalous Nernst effect and the Mott relation of Weyl semimetal Co$_{\mathbf{2}}$MnGa thin films}, url = {https://link.aps.org/doi/10.1103/PhysRevB.101.060406}, volume = 101, year = 2020 }