Nernst–Ettingshausen effect in thin Pt and W films at low temperatures
As spin caloritronic measurements become increasingly common techniques for characterizing material properties, it is important to quantify potentially confounding effects. We report measurements of the Nernst–Ettingshausen response from room temperature to 5 K in thin film wires of Pt and W, metals commonly used as inverse spin Hall detectors in spin Seebeck characterization. Johnson–Nyquist noise thermometry is used to assess the temperature change in the metals with heater power at low temperatures, and the thermal path is analyzed via finite-element modeling. The Nernst–Ettingshausen response of W is found to be approximately temperature-independent, while the response of Pt increases at low temperatures. Furthermore, these results are discussed in the context of theoretical expectations and the possible role of magnetic impurities in Pt.
- Research Organization:
- Rice Univ., Houston, TX (United States)
- Sponsoring Organization:
- USDOE Office of Science (SC), Basic Energy Sciences (BES); National Science Foundation (NSF)
- Grant/Contract Number:
- FG02-06ER46337; DMR-2102028; DMR-1704264
- OSTI ID:
- 1973389
- Journal Information:
- Applied Physics Letters, Vol. 122, Issue 18; Related Information: R. Luo , T. J. Legvold , L. Chen , and D. Natelson (2023). “Data for journal article ’Nernst-Ettingshausen effect in thin Pt and W films at low temperatures,” Zenodo. https://doi.org/10.5281/zenodo.7834354; ISSN 0003-6951
- Publisher:
- American Institute of Physics (AIP)Copyright Statement
- Country of Publication:
- United States
- Language:
- English
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