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Enhanced Thermoelectric Performance by Resonant Doping and Embedded Magnetic Impurity
- Title
- Enhanced Thermoelectric Performance by Resonant Doping and Embedded Magnetic Impurity
- Authors
- Kim, Sujin; Hwang, Junphil; You, Tae-Soo; Yeon, Seongbeom; Kim, Jungwon; Yu, Byung-Kyu; Han, Mi-Kyung; Lee, Minju; Acharya, Somnath; Kim, Jiyong; Kim, Woochul; Kim, Sung-Jin
- Ewha Authors
- 김성진; 한미경
- SCOPUS Author ID
- 김성진; 한미경
- Issue Date
- 2023
- Journal Title
- PHYSICAL REVIEW APPLIED
- ISSN
- 2331-7019
- Citation
- PHYSICAL REVIEW APPLIED vol. 19, no. 1
- Publisher
- AMER PHYSICAL SOC
- Indexed
- SCIE; SCOPUS
- Document Type
- Article
- Abstract
- The thermoelectric energy-conversion efficiency is significantly enhanced by introducing magnetism. Doping Cr atoms in a Cu2SnS3(CTS) matrix modifies the electron density of state (e-DOS) and causes a special electron-transport mechanism by localized impurity spin moments. The localized spin moments cause a spin-spin exchange interaction with the spin of itinerant electrons of the CTS matrix. This is clearly verified in M -T measurement, which deviated from Curie's law. The figure of merit (zT) of the magnetic nanocomposite was 8 times higher than that of pristine CTS by the synergetic effect of modifying e-DOS near the Fermi level and electron transport by localized spin moments.
- DOI
- 10.1103/PhysRevApplied.19.014034
- Appears in Collections:
- 자연과학대학 > 화학·나노과학전공 > Journal papers
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