Spincaloritronic Measurements: A Round Robin Comparison of the Longitudinal Spin Seebeck Effect

• Published in: IEEE transactions on instrumentation and measurement Vol. 68; no. 6; pp. 1765 - 1773
• Main Authors: Sola, Alessandro, Basso, Vittorio, Kuepferling, Michaela, Pasquale, Massimo, ne Meier, Daniel Carsten, Reiss, Gunter, Kuschel, Timo, Kikkawa, Takashi, Uchida, Ken-ichi, Saitoh, Eiji, Jin, Hyungyu, Watzman, Sarah J., Boona, Steve, Heremans, Joseph, Jungfleisch, Matthias B., Zhang, Wei, Pearson, John E., Hoffmann, Axel, Schumacher, Hans W.
• Format: Journal Article
• Language: English
• Published: New York IEEE 01-06-2019; The Institute of Electrical and Electronics Engineers, Inc. (IEEE)
• Subjects: Design of experiments; Garnets; Magnetic materials; Magnetic multilayers; Measurement methods; measurement techniques; metrology; platinum; Reproducibility; Saturation magnetization; Seebeck effect; spin polarized transport; Temperature measurement; temperature measurements; Temperature sensors; Thermal conductivity; thermal sensors; thermoelectric energy conversion; Thermoelectricity; thin film devices
• ISSN: 0018-9456; 1557-9662
• DOI: 10.1109/TIM.2018.2882930

The rising field of spin caloritronics focuses on the interactions between spin and heat currents in a magnetic material; the observation of the spin Seebeck effect opened the route to this branch of research. This paper reports the results of a round robin test performed by five partners on a single device highlighting the reproducibility problems related to the measurements of the spin Seebeck coefficient, the quantity that describes the strength of the spin Seebeck effect. This paper stimulated the search for more reproducible measurement methods through the analysis of the systematic effects.