[14a-A202-1~8] 13.2 Exploratory Materials, Physical Properties, Devices

△ [14a-A202-5] Relationship between electronic states and thermoelectric characteristics in B20-type CoSi film /Si

〇Takafumi Ishibe¹, Takahiro Hinakawa¹, Shunya Sakane¹, Kazunori Sato¹, Eiichi Kobayashi², Takeshi Fujita³, Yoshiaki Nakamura¹ (1.Osaka Univ., 2.Kyushu synchrotron light research center, 3.Kochi Univ. Technol.)

Keywords:Thermoelectric material, Silicide, Electronic states

Dirac, Weyl materials are attracting great interest as one of the promising thermoelectric materials because they show high thermoelectric power factor due to the peculiar electronic states. We have paid attention to e-CoSi, Si-based material with Dirac-like electron system. So far, we have successfully formed single-phase e-CoSi films on Si substrates, but the relationship between electronic states and thermoelectric characteristics has not been revealed. In this study, we analyze the electrocnic states of e-CoSi films/Si and reveal the effect on thermoelectric characteristics.