Pramana | |
Effect of interband interaction on isotope effect exponent of MgB2 superconductors | |
P Changkanarth2  C Kumvongsa1  A Burakorn2  P Udomsamuthirun12  | |
[1] Department of Basic Science, School of Science, The University of the Thai Chamber of Commerce, Dindaeng, Bangkok 10400, Thailand$$;Department of Physics, Faculty of Science, Srinakharinwirot University, Bangkok 10110, Thailand$$ | |
关键词: Isotope effect exponent; superconductors; interband interaction.; | |
DOI : | |
学科分类:物理(综合) | |
来源: Indian Academy of Sciences | |
【 摘 要 】
The exact formula of ð‘‡c's equation and the isotope effect exponent of two-band s-wave superconductors in the weak-coupling limit are derived by considering the influence of interband interaction. In each band, our model consists of two pairing interactions: the electron-phonon interaction and non-electron-phonon interaction. We find that the isotope effect exponent of MgB2, 𛼠= 0.3 with ð‘‡c ≈ 40 K can be found in the weak coupling regime and interband interaction of electron-phonon shows more effect on the isotope effect exponent than on the interband interaction of non-phonon.
【 授权许可】
Unknown
【 预 览 】
Files | Size | Format | View |
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RO201912040497056ZK.pdf | 747KB | download |