Isotope effect and the role of phonons in the iron-based superconductors

Physical Review B - Condensed Matter and Materials Physics

Volumn 79, Issue 9, 2009, Pages

  Bang, Yunkyu ^a,b  

^a Chonnam National University   (South Korea)

^b Asia Pacific Center for Theoretical Physics (APCTP)   (South Korea)

Author keywords

[No Author keywords available]

Indexed keywords

EID: 63249095232     PISSN: 10980121     EISSN: 1550235X     Source Type: Journal    
DOI: 10.1103/PhysRevB.79.092503     Document Type: Article

References (38)

1. Y. Kamihara, J. Am. Chem. Soc. 128, 10012 (2006) 10.1021/ja063355c
2. Y. Kamihara, J. Am. Chem. Soc. 130, 3296 (2008). 10.1021/ja800073m
3. G. F. Chen, Phys. Today 61, 70 (2008) 10.1063/1.2930746
4. G. F. Chen, Phys. Rev. Lett. 100, 247002 (2008) 10.1103/PhysRevLett.100. 247002
5. G. F. Chen, Nature (London) 453, 761 (2008). 10.1038/nature07045
6. I. I. Mazin, Phys. Rev. Lett. 101, 057003 (2008). 10.1103/PhysRevLett. 101.057003
7. K. Kuroki, Phys. Rev. Lett. 101, 087004 (2008). 10.1103/PhysRevLett.101. 087004
8. Y. Bang and H.-Y. Choi, Phys. Rev. B 78, 134523 (2008). 10.1103/PhysRevB.78.134523
9. M. M. Korshunov and I. Eremin, Phys. Rev. B 78, 140509 (R) (2008). 10.1103/PhysRevB.78.140509
10. Fa Wang, Hui Zhai, Ying Ran, Ashvin Vishwanath, and Dung-Hai Lee, Phys. Rev. Lett. 102, 047005 (2009). 10.1103/PhysRevLett.102.047005
11. H. Ding, Europhys. Lett. 83, 47001 (2008). 10.1209/0295-5075/83/47001
12. L. Malone, arXiv:0806.3908 (unpublished)
13. K. Hashimoto, Phys. Rev. Lett. 102, 017002 (2009) 10.1103/PhysRevLett. 102.017002
14. C. Martin, arXiv:0807.0876 (unpublished).
15. K. Matano, Europhys. Lett. 83, 57001 (2008) 10.1209/0295-5075/83/57001
16. H. J. Grafe, Phys. Rev. Lett. 101, 047003 (2008) 10.1103/PhysRevLett.101. 047003
17. H. Mukuda, N. Terasaki, H. Kinouchi, M. Yashima, Y. Kitaoka, S. Suzuki, S. Miyasaka, S. Tajima, K. Miyazawa, P. M. Shirage, H. Kito, H. Eisaki, and A. Iyo, J. Phys. Soc. Jpn. 77, 093704 (2008) 10.1143/JPSJ.77.093704
18. Y. Nakai, K. Ishida, Y. Kamihara, M. Hirano, and H. Hosono, J. Phys. Soc. Jpn. 77, 073701 (2008). 10.1143/JPSJ.77.073701
19. Y. Bang and H.-Y. Choi, arXiv:0808.0302 (unpublished).
20. D. Parker, Phys. Rev. B 78, 134524 (2008) 10.1103/PhysRevB.78.134524
21. A. V. Chubukov, Phys. Rev. B 78, 134512 (2008) 10.1103/PhysRevB.78.134512
22. M. M. Parish, Phys. Rev. B 78, 144514 (2008). 10.1103/PhysRevB.78.144514
23. V. Cvetkovic and Z. Tesanovic, arXiv:0804.4678 (unpublished).
24. C. de la Cruz, Nature (London) 453, 899 (2008) 10.1038/nature07057
25. J. Zhao, Nature Mater. 7, 953 (2008).
26. R. H. Liu, arXiv:0810.2694 (unpublished).
27. L. Boeri, Phys. Rev. Lett. 101, 026403 (2008). 10.1103/PhysRevLett.101. 026403
28. H. Eschrig, arXiv:0804.0186 (unpublished).
29. J. Zhao, Phys. Rev. B 78, 132504 (2008). 10.1103/PhysRevB.78.132504
30. Y. Bang, Phys. Rev. B 78, 075116 (2008). 10.1103/PhysRevB.78.075116
31. These approximations are equivalent to the replacement of (Nh Vhh + Ne Vee) by 2 Nh Vhh Ne Vee both for VAFM and Vph in the coupled gap equations 2 3.
32. This choice of the DOS ratio (Nh / Ne =3) is indeed a close value of the realistic band calculations of Ref., which yields this ratio 2.6 (Ref.).
33. A typical AFM-fluctuation frequency of the S pnictide (Ba0.6 K0.4 Fe2 As2) is measured by neutron experiments which is about 15 meV 180 K (Ref.) and a typical phonon frequency was theoretically estimated as a logarithmically averaged value ωlg 200 K (Ref.). They are comparable values to each other with some possible variations for different compounds and different dopings.
34. A. D. Christianson, Nature (London) 456, 930 (2008). 10.1038/nature07625
35. J. W. Garland, Phys. Rev. Lett. 11, 114 (1963) 10.1103/PhysRevLett.11.114
36. E. Schachinger, Phys. Rev. B 42, 406 (1990) 10.1103/PhysRevB.42.406
37. A. Bill, V. Z. Kresin, and S. A. Wolf, arXiv:9801222 (unpublished)
38. O. V. Dolgov, Phys. Rev. Lett. 95, 257003 (2005). 10.1103/PhysRevLett.95. 257003