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Iron Superconductivity Weathers Another Storm

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Igor Mazin, Physics 4, 26 (2011) – Published March 28, 2011
A new class of high-temperature iron-based superconductors lacks features in its electronic band structure that, based on current theoretical understanding, were considered essential. In a field that has produced quite a few surprises, this is the biggest yet.
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Fermi-surface reconstruction and the origin of high-temperature superconductivity

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Michael R. Norman, Physics 3, 86 (2010) – Published October 18, 2010
After twenty years of effort, definitive quantum oscillations that could be used to map the Fermi surface were finally observed in a high-temperature cuprate superconductor in 2007. This and subsequent studies reveal a profound rearrangement of the Fermi surface in underdoped cuprates. The cause of the reconstruction, and its implication for the origin of high-temperature superconductivity, is a subject of active debate.
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High-temperature superconductivity in the iron pnictides

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Michael R. Norman, Physics 1, 21 (2008) – Published September 15, 2008
A new class of high-temperature superconductors has been discovered in layered iron arsenic compounds. Results in this rapidly moving field may shed light on the still unsolved problem of high-temperature cuprate superconductivity.