Superconductivity in iron compounds
By G. Stewart. 2011
1,152 citations recorded by the source corpus.
Kamihara and coworkers' report of superconductivity at ${T}_{c}=26\text{ }\text{ }\mathrm{K}$ in fluorine-doped LaFeAsO inspired a worldwide effort to understand the nature of the superconductivity in this new class of compounds. These iron pnictide and chalcogenide (FePn/Ch) superconductors have Fe electrons at the Fermi surface, plus an unusual Fermiology that can change rapidly with doping, which lead to normal and superconducting state properties very different from those in standard electron-phonon coupled ``conventional'' superconductors. Clearly, superconductivity and magnetism or magnetic fluctuations are intimately related in the FePn/Ch, and even coexist in some. Open questions, including the superconducting nodal structure in a number of compounds, abound and are often dependent on improved sample quality for their solution. With ${T}_{c}$ values up to 56 K, the six distinct Fe-containing superconducting structures exhibit complex but often comparable behaviors. The search for correlations and explanations in this fascinating field of research would benefit from an organization of the large, seemingly disparate data set. This review provides an overview, using numerous references, with a focus on the materials and their superconductivity.
Subfields: Condensed Matter Physics, Electronic, Optical and Magnetic Materials
View Paper: https://www.semanticscholar.org/paper/de5b00dff851b122b3f27136b6e70002499556ca
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Citations in the corpus
- Iron-based high transition temperature superconductors (2014, methodology): “We refer the readers to several recent review papers [21–27] for more complete description of the field.”
- A Quantum Critical Point Lying Beneath the Superconducting Dome in Iron Pnictides (2013, background): “parent compositions and are known as the 111, 122, 1111, 32522, 21311 types [6, 7].”
- Solids, liquids, and gases under high pressure (2018, background): “The P effects on the superconducting and structural properties were later reviewed for pnictides by Stewart (2011) and the 122 family by Dagotto (2013).”
- Magnetism and its microscopic origin in iron-based high-temperature superconductors (2012, background): “However, pnictides such as BaFe2−xTxAs2 are characterized by an even stronger correlation, which induces a ratioR≈0.3, similar to results for overdoped La2−xSrxCuO4, widely considered to be a ‘correlated metal’.”
- Introduction to holographic superconductor models (2015, methodology): “Upon switching on the interband coupling between the two components, this model can describe the phenomenon of the two gaps in materials such as MgB2 (s++) [138, 139] and iron pnictides (s+−) [140, 141, 142].”
- Two-Dimensional Materials from Data Filtering and Ab Initio Calculations (2013, background): “In Table I, we briefly summarize some of their properties but we do not discuss here in detail their electronic structure, since it has already been reported [18,39,40].”
- London penetration depth in iron-based superconductors (2011, background): “For some reviews of various experiments and theories the reader is referred to [4, 5, 6, 7, 16, 17, 18, 11, 19].”
- Colloquium: The unexpected properties of alkali metal iron selenide superconductors (2012, background): “Several other superconductors with a similar structure were synthesized since 2008 (for a review see Johnston, 2010; Stewart, 2011).”