[11a-E214-1~11] 10.1 Emerging materials in spintronics and magnetics (including fabrication and characterization methodologies)

10:00 AM - 10:15 AM JST(1:00 AM - 1:15 AM UTC)Presentation by Applicant for JSAP Young Scientists Presentation AwardEnglish Presentation

[11a-E214-5] Magneto-Thermoelectric Transport Properties across the Magnetic Phase Diagram of Fe_2-xPd_xMo₃N Skyrmion Thin Films

〇BOWEN QIANG^1,2, YAMAMOTO KANCHI¹, ASNO HIDEFUMI³, MIYAMACHI TOSHIO¹, MIZUGUCHI MASAKI¹ (1.Nagoya Univ., 2.Shibaura-it, 3.NISRI)

Keywords:

Skyrmion,Nernst Effect,Zeebeck Effect

Thermomagnetic effects in skyrmion-hosting materials have attracted considerable interest because of their potential applications in spin caloritronics and energy conversion. In this study, we investigated the thermomagnetic properties of filled β-Mn-type Fe_2-xPd_xMo₃N thin films based on their magnetic phase diagram. Room-temperature Nernst measurements were performed for samples with x = 0.15, 0.31, 0.54, 0.72, and 1.01, while temperature-dependent Nernst and Seebeck measurements were carried out for the x = 0.32 sample. The largest room-temperature Nernst coefficient, 149 nV/K , was obtained for x = 0.32. Comparison with previously reported skyrmion systems revealed that this value represents the largest room-temperature topological Nernst signal induced by skyrmions reported to date, achieved under relatively low magnetic fields. The mechanisms underlying these thermomagnetic responses, together with the Seebeck-effect results, will be discussed at the conference.