Energy gaps and Kohn anomalies in elemental superconductors

Science

Volumn 319, Issue 5869, 2008, Pages 1509-1512

  Aynajian, P ^a   Keller, T ^a,b   Boeri, L ^a   Shapiro, S M ^c   Habicht, K ^d   Keimer, B ^a  

^a MAX PLANCK INSTITUT FÜR FESTKÖRPERFORSCHUNG   (Germany)

^b TECHNICAL UNIVERSITY OF MUNICH   (Germany)

^c BROOKHAVEN NATIONAL LABORATORY   (United States)

^d HAHN MEITNER INSTITUT   (Germany)

Author keywords

[No Author keywords available]

Indexed keywords

LEAD; NIOBIUM;

LEAD; LOW TEMPERATURE; NIOBIUM; SUPERCONDUCTIVITY; THEORETICAL STUDY;

ACOUSTICS; ARTICLE; ELECTRON; ENERGY; LOW TEMPERATURE; MEASUREMENT; NEUTRON; PRIORITY JOURNAL; SPECTROSCOPY; SUPERCONDUCTOR; SURFACE PROPERTY; TEMPERATURE DEPENDENCE; THEORETICAL STUDY;

EID: 40849085291     PISSN: 00368075     EISSN: 10959203     Source Type: Journal    
DOI: 10.1126/science.1154115     Document Type: Article

References (31)

1. J. Bardeen, L. N. Cooper, J. R. Schrieffer, Phys. Rev. 108, 1175 (1957).
2. For a review, see J. R. Schrieffer, Theory of Superconductivity (Perseus, New York, 1999).
3. For recent advances in ab initio computation of superconducting properties, see M. A. L. Marques et al., Phys. Rev. B 72, 024546 (2005).
4. W. Kohn, Phys. Rev. Lett. 2, 393 (1959).
5. B. N. Brockhouse, T. Arase, G. Caglioti, A. D. B. Woods, Phys. Rev. 128, 1099 (1962).
6. R. Stedman, L. Almquist, G. Nilsson, G. Raunio, Phys. Rev. 163, 567 (1967).
7. Y. Nakagawa, A. D. B. Woods, Phys. Rev. Lett. 11, 271 (1963).
8. D. E. Moncton, J. D. Axe, F. J. DiSalvo, Phys. Rev. B 16, 801 (1977).
9. S. M. Shapiro, G. Shirane, J. D. Axe, Phys. Rev. B 12, 4899 (1975).
10. S. P. Bayrakci, T. Keller, K. Habicht, B. Keimer, Science 312, 1926 (2006).
11. T. Keller et al., Phys. Rev. Lett. 96, 225501 (2006).
12. T. Keller et al., Appl. Phys. A 74, S332 (2002).
13. Materials and methods are available on Science Online.
14. J. R. Anderson, A. V. Gould, Phys. Rev. 139, A1459 (1963).
15. H. J. Maris, W. E. Massey, Phys. Rev. Lett. 25, 220 (1970).
16. L. P. Pitayevski, Y. B. Levinson, Phys. Rev. B 14, 263 (1976).
17. R. F. Gasparovic, B. N. Taylor, R. K. Eck, Solid State Commun. 4, 59 (1966).
18. M. A. Moore, D. I. Paul, Solid State Commun. 9, 1303 (1971).
19. P. B. Allen, Phys. Rev. B 6, 2577 (1972).
20. S. Pisana et al., Nat. Mat. 6, 198 (2007).
21. E. Cappelluti, Phys. Rev. B 73, 140505 (2006).
22. O. V. Dolgov, O. K. Andersen, I. I. Mazin, Phys. Rev. B 77, 014517 (2008).
23. A. W. Overhauser, Phys. Rev. 128, 1437 (1962).
24. S. V. Borisenko et al., preprint available at www.arXiv.org/abs/ 0704.1544.
25. T. Kiss et al., Nat. Phys. 3, 721 (2007).
26. K. Tanaka et al., Science 314, 1910 (2006); published online 15 November 2006 (10.1126/science.1133411).
27. K. Terashima et al., Phys. Rev. Lett. 99, 017003 (2007).
28. W. S. Lee et al., Nature 450, 81 (2007).
29. D. L. Waldorf, Bull. Am. Phys. Soc. 5, 170 (1960).
30. R. C. Dynes, V. Narayanamurti, J. P. Garno, Phys. Rev. Lett. 41, 1509 (1978).
31. We thank O. K. Andersen, S. P. Bayrakci, S. V. Borisenko, M. Cardona, O. Dolgov, E. K. U. Gross, and G. Khaliullin for fruitful discussions; C. T. Lin for the Pb crystals; J. Mayor for the Nb crystals; and K. Buchner for technical assistance.