Journal of Superconductivity and Novel Magnetism

, Volume 22, Issue 6, pp 527–528

Unity in the Diversity


    • Physics DepartmentSapienza University
  • Nicola Poccia
    • Physics DepartmentSapienza University
  • Alessandro Ricci
    • Physics DepartmentSapienza University

DOI: 10.1007/s10948-009-0471-z

Cite this article as:
Bianconi, A., Poccia, N. & Ricci, A. J Supercond Nov Magn (2009) 22: 527. doi:10.1007/s10948-009-0471-z


The Superstripes 2008 conference has been focused on the discovery of the amplification of the superconducting critical temperature Tc in a novel realization (iron pnictides) of metallic heterostructures at the atomic limit called superstripes. These are formed by superlattices of superconducting units (layers, or stripes, or wires, or spheres or balls) separated by an intercalated material. Superstripes show multiband high Tc superconductivity driven by the shape resonance or Feshbach resonance in the interband pairing that occurs by tuning the chemical potential at an electronic topological transition where the Fermi surface topology of one of the bands changes its dimensionality. The maximum Tc amplification is reached by tuning the chemical potential to “shape resonance” by changing: the charge density and/or the superlattice structural parameters.


Multiband superconductivityFeshbach resonanceShape resonanceIron pnictides
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© Springer Science+Business Media, LLC 2009