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IsLaFeAsO1−xFxan Electron-Phonon Superconductor?
Open accessAbstract
In this Letter, we calculate the electron-phonon coupling of the newly discovered superconductor LaFeAsO1-xFx using linear response. For pure LaFeAsO, the calculated electron-phonon coupling constant lambda=0.21 and logarithmic-averaged frequency omegaln=206 K give a maximum Tc of 0.8 K, using the standard Migdal-Eliashberg theory. For the F-doped compounds, we predict even smaller coupling constants. To reproduce the experimental Tc, a 5-6 times larger coupling constant would be needed. Our results indicate that electron-phonon coupling is not sufficient to explain superconductivity in the whole family of Fe-As-based superconductors, probably due to the importance of strong-correlation effects.
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Cites
Self-Consistent Equations Including Exchange and Correlation Effects
Kohn, W., & Sham, L. J. (1965) · Physical Review · doi:10.1103/physrev.140.a1133 · Cited by 64,135
Cited by
Kuroki, K., Onari, S., Arita, R., Usui, H., Tanaka, Y., Kontani, H., & Aoki, H. (2008) · Physical Review Letters · doi:10.1103/physrevlett.101.087004 · Cited by 1,649
Superconductivity in iron compounds
Stewart, G. R. (2011) · Reviews of Modern Physics · doi:10.1103/revmodphys.83.1589 · Cited by 1,610
First-principles prediction of charge mobility in carbon and organic nanomaterials
Xi, J., Long, M., Tang, L., Wang, D., & Shuai, Z. (2012) · Nanoscale · doi:10.1039/c2nr30585b · Cited by 708
Tunable (δπ,δπ)-Type Antiferromagnetic Order inα-Fe(Te,Se) Superconductors
Bao, W., Qiu, Y., Huang, Q., Green, M. A., Zajdel, P., Fitzsimmons, M. R., Zhernenkov, M., Chang, S., Fang, M., Qian, B., et al. (2009) · Physical Review Letters · doi:10.1103/physrevlett.102.247001 · Cited by 623
High-temperature superconductivity in iron pnictides and chalcogenides
Si, Q., Yu, R., & Abrahams, E. (2016) · Nature Reviews Materials · doi:10.1038/natrevmats.2016.17 · Cited by 445
Metadata
- Authors
- Boeri, L., Dolgov, O. V., & Golubov, A. A.
- Venue
- Physical Review Letters
- Publisher
- American Physical Society (APS)
- Published
- 2008-07-08
- Volume
- 101
- Issue
- 2
- Pages
- 026403-026403
- ISSN
- 0031-9007 (ISSN-L)
- 1079-7114
- OpenAlex
- W1581444642
- Cited by
- 605
- References
- 1
- FWCI
- 42.17
- Type
- journal article
- Language
- en
- Open access
- bronze
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- Boeri, L., Dolgov, O. V., & Golubov, A. A. (2008). IsLaFeAsO1−xFxan Electron-Phonon Superconductor? Physical Review Letters. https://doi.org/10.1103/physrevlett.101.026403
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