TY - JOUR
T1 - The role of electron-phonon scattering on thermoelectric properties of intermetallic compounds XSi (X = Co, Rh)
AU - Nam, Ho Ngoc
AU - Suzuki, Katsuhiro
AU - Masago, Akira
AU - Shinya, Hikari
AU - Fukushima, Tetsuya
AU - Sato, Kazunori
N1 - Funding Information:
This work was supported by JST CREST (Grant No. JP-MJCR18I2). The author H. N. N. acknowledges the financial support of the Japanese Government Scholarship (MEXT) and Innovative Asia program from the Japan International Cooperation Agency (JICA). The authors also thank Prof. Yoshiaki Nakamura, Dr. Takafumi Ishibe for suggesting material.
Publisher Copyright:
© 2023 The Japan Society of Applied Physics.
PY - 2023/2/1
Y1 - 2023/2/1
N2 - In this work, we elucidated the electronic structure and thermoelectric properties of intermetallic XSi (X = Co, Rh) compounds. By combining first-principles calculations and the Boltzmann equation within electron-phonon average approximation, thermoelectric properties of XSi are well reproduced compared to experimental observations. We found that the considerable Seebeck coefficient and low electrical resistivity give XSi a large power factor, which has the potential for thermoelectric applications. We also discussed the electron mean free paths, a possible factor affecting electrical conductivity when using the nanostructuring approach to optimize the thermoelectric performance.
AB - In this work, we elucidated the electronic structure and thermoelectric properties of intermetallic XSi (X = Co, Rh) compounds. By combining first-principles calculations and the Boltzmann equation within electron-phonon average approximation, thermoelectric properties of XSi are well reproduced compared to experimental observations. We found that the considerable Seebeck coefficient and low electrical resistivity give XSi a large power factor, which has the potential for thermoelectric applications. We also discussed the electron mean free paths, a possible factor affecting electrical conductivity when using the nanostructuring approach to optimize the thermoelectric performance.
KW - electron-phonon scattering
KW - electronic structure
KW - intermetallic compounds
KW - thermoelectrics
KW - transport properties
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U2 - 10.35848/1347-4065/acb97a
DO - 10.35848/1347-4065/acb97a
M3 - Article
AN - SCOPUS:85148958068
SN - 0021-4922
VL - 62
JO - Japanese Journal of Applied Physics, Part 1: Regular Papers & Short Notes
JF - Japanese Journal of Applied Physics, Part 1: Regular Papers & Short Notes
IS - 2
M1 - 020904
ER -