[19a-E302-1~10] 12.2 Characterization and Materials Physics

[19a-E302-8] Preparation of sub-microscale thermocouples for thermal transport measurements of single-molecule junctions

〇(M2)Yuki Hanamura¹, Ryo Yamada¹, Hirokazu Tada¹ (1.Osaka Univ.)

Keywords:single-molecule junction, thermal conductivity, thermometer

In this work, we prepared and calibrated sub-microscale thermocouples for thermal conductivity measurements of single-molecule junctions.We confirmed that the Seebeck coefficients of Au and Cr thin wire thermocouples changed by up to 20% depending on the wire width. The effect of electron scattering is known to become more significant for thin-film thermocouples. Additionally, we have found that the electron scattering contribution of the side-surface of thermocouple wires cannot be ignored in the sub-microscale region.