New ternary ThCr2Si2-type iron-selenide superconducting materials: synthesis, properties and simulations

A. L. Ivanovskii

doi:10.1016/j.physc.2011.04.009

New ternary ThCr2Si2-type iron-selenide superconducting materials: synthesis, properties and simulations

Materials Science 2015-05-27 v1 Superconductivity

Authors: A. L. Ivanovskii

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Abstract

Very recently (November, 2010, PRB, 82, 180520R), the first ThCr2Si2-type ternary superconductor K0.8Fe2Se2 with enhanced TC ~ 31 K has been discovered. This finding has stimulated much activity in search for related materials and triggered intense studies of their properties. Indeed, very soon superconductivity (TC ~ 28-32 K) was also found in the series of related ternary systems (so-called 122 phases) such as CsxFe2-ySe2, RbxFe2-ySe2, (TlK)xFeySe2, (TlRb)xFeySe2 etc., which formed a new group of superconducting iron-based materials without toxic As. In this paper the recent progress in synthesis of 122-like iron-selenide systems and in experimental research of their properties is reviewed. Available theoretical data on electronic, magnetic, and elastic properties of this newest group of superconducting materials are also discussed.

Keywords

ThCr2Si2-type iron-selenide superconductors ternary systems 122 phases synthesis electronic properties magnetic properties

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@article{arxiv.1104.3400,
  title  = {New ternary ThCr2Si2-type iron-selenide superconducting materials: synthesis, properties and simulations},
  author = {A. L. Ivanovskii},
  journal= {arXiv preprint arXiv:1104.3400},
  year   = {2015}
}

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44 pages, 27 figures

New ternary ThCr2Si2-type iron-selenide superconducting materials: synthesis, properties and simulations

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