[17p-Z17-1~19] 9.4 Thermoelectric conversion

[17p-Z17-19] Large anomalous Nernst effect in the D0₃-Fe₃X (X = Ga, Al) thin films

〇Tomoya Higo^1,2, Akito Sakai^2,3, Shinji Miwa^1,2,4, Satoru Nakatsuji^1,2,3,4,5 (1.ISSP U. Tokyo, 2.JST-CREST, 3.Dep. Phys. U. Tokyo, 4.Trans-Quantum Sci. Inst., 5.Johns Hopkins U.)

Keywords:Anomalous Nernst effect, Topological magnet, Thermoelectric conversion

Recently, topological magnets showing a large anomalous Nernst effect have attracted much attention. Although the topological ferromagnet D0₃-Fe₃X (X = Ga, Al), having a nodal-web in momentum space, is a binary metal composed of relatively inexpensive elements, its anomalous Nernst effect comparable to the previously reported maximum value of ~6 μV/K has been observed in the bulk single crystals at room temperature. In this work, we have prepared D0₃-Fe₃X (X = Ga, Al) single crystal thin films. We will report the anomalous Nernst effect in the thin films.