Enhanced Fermi surface nesting in superconducting BaFe$_2$(As$_{1-x}$P$_x$)$_2$ revealed by de Haas-van Alphen effect

J. G. Analytis; J. -H. Chu; R. D. McDonald; S. C. Riggs; I. R. Fisher

doi:10.1103/PhysRevLett.105.207004

Enhanced Fermi surface nesting in superconducting BaFe$_2$(As$_{1-x}$P$_x$)$_2$ revealed by de Haas-van Alphen effect

Superconductivity 2010-11-16 v1 Strongly Correlated Electrons

Authors: J. G. Analytis , J. -H. Chu , R. D. McDonald , S. C. Riggs , I. R. Fisher

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Abstract

The three-dimensional Fermi surface morphology of superconducting BaFe_2(As_0.37}P_0.63)_2 with T_c=9K, is determined using the de Haas-van Alphen effect (dHvA). The inner electron pocket has a similar area and k_z interplane warping to the observed hole pocket, revealing that the Fermi surfaces are geometrically well nested in the (\pi,\pi) direction. These results are in stark contrast to the Fermiology of the non-superconducting phosphides (x=1), and therefore suggests an important role for nesting in pnictide superconductivity.

Keywords

de Haas-van Alphen effect Fermi surface nesting iron-based superconductivity BaFe₂(As₁₋ₓPₓ)₂ quantum oscillations pnictide

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@article{arxiv.1002.1304,
  title  = {Enhanced Fermi surface nesting in superconducting BaFe$_2$(As$_{1-x}$P$_x$)$_2$ revealed by de Haas-van Alphen effect},
  author = {J. G. Analytis and J. -H. Chu and R. D. McDonald and S. C. Riggs and I. R. Fisher},
  journal= {arXiv preprint arXiv:1002.1304},
  year   = {2010}
}

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5 pages, 4 figures

Enhanced Fermi surface nesting in superconducting BaFe$_2$(As$_{1-x}$P$_x$)$_2$ revealed by de Haas-van Alphen effect

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