Skip to main content
×
×
Home

Spin fluctuations, Fermi surface hotspots and nesting in PuCoGa5

  • Matthias J. Graf (a1), Tanmoy Das (a1) and Jian-Xin Zhu (a1)
Abstract

Surprisingly little is known about the mechanism and symmetry of superconducting pairing in PuCoGa5. A common thread with other unconventional superconductors is the presence of spin fluctuations in the normal state, which in this particular case is controlled by strong spin–orbit coupling split bands. The many and anisotropic Fermi surfaces make the guessing of the potential spin-fluctuation nesting vector and resulting symmetry of the pairing function a nontrivial task. To provide much needed guidance for the identification of the pairing symmetry in this multiband superconductor, we perform first-principles based magnetic spin susceptibility calculations to identify the dominant nesting vectors that potentially give rise to interband pairing with nodal d- or s±-wave gap functions.

Copyright
References
Hide All
1. Sarrao, J. L. et al. ., Nature 420, 297 (2002).
2. Curro, N. J. et al. ., Nature 434, 622 (2005).
3. Sakai, H. et al. ., J. Phys. Soc. Jpn. 74, 1710 (2005).
4. Oppeneer, P. M. et al. ., J. Alloys Compounds 444-445, 109 (2007).
5. Opahle, I., Elgazzar, S., Koepernik, K., and Oppeneer, P. M., Phys. Rev. B 70, 104504 (2004).
6. Shick, A. B. et al. ., Phys. Rev. B 83, 155105 (2011).
7. Pourovskii, L. V., Katsnelson, M. I., and Lichtenstein, A. I., Phys. Rev. B 73, 060506 (2006).
8. Daghero, D. et al. ., Nat. Commun. 3, 786 (2012).
9. Ronning, F. et al. ., J. Phys. – Condens. Matter 24, 294206 (2012).
10. Das, T., Zhu, J.-X., and Graf, M. J., arXiv:1311.6410 .
11. Scalapino, D. J., Rev. Mod. Phys. 84, 1383 (2012); G. R. Stewart, Rev. Mod. Phys. 56, 755(1984); P. S. Riseborough, G. M. Schmiedeshoff, and J. L. Smith, “Heavy Fermion Superconductivity” in Superconductivity – Conventional and Unconventional Superconductors, ed. K. H. Bennemann and J. B. Ketterson (Springer-Verlag, Berlin, 2008) Vol. II, 1031.
12. Das, T., Zhu, J.-X., and Graf, M. J., Phys. Rev. Lett. 108, 017001 (2012).
13. Blaha, P. et al. ., An augmented plane wave + local orbitals program for calculating crystal properties, (Schwarz, K., Tech. Universitat Wien, Austria, 2001).
14. Perdew, J. P., Burke, S., Ernzerhof, M., Phys. Rev. Lett. 77, 3865 (1996).
15. Das, T., and Balatsky, A. V., Phys. Rev. Lett. 106, 157004 (2011).
16. Das, T., Markiewicz, R. S., and Bansil, A., Phys. Rev. B 81, 174504 (2010).
17. Das, T., Markiewicz, R. S., and Bansil, A., Phys. Rev. B 81, 184515 (2010).
18. Baek, S. H. et al. ., Phys. Rev. Lett. 105, 217002 (2010).
19. Bang, Y., Graf, M. J., Curro, N. J., and Balatsky, A. V., Phys. Rev. B. 74, 054514 (2006).
20. Bang, Y., Graf, M. J., Curro, N. J., and Balatsky, A. V., Mater. Res. Soc. Symp. Proc. 893, (Warrendale, PA, 2006) 0893-JJ02-04.
21. Bang, Y., Graf, M. J., Curro, N. J., and Balatsky, A. V., J. Magn. Magn. Mater. 310, 634 (2007).
Recommend this journal

Email your librarian or administrator to recommend adding this journal to your organisation's collection.

MRS Online Proceedings Library (OPL)
  • ISSN: -
  • EISSN: 1946-4274
  • URL: /core/journals/mrs-online-proceedings-library-archive
Please enter your name
Please enter a valid email address
Who would you like to send this to? *
×

Keywords

Metrics

Full text views

Total number of HTML views: 0
Total number of PDF views: 0 *
Loading metrics...

Abstract views

Total abstract views: 0 *
Loading metrics...

* Views captured on Cambridge Core between <date>. This data will be updated every 24 hours.

Usage data cannot currently be displayed