FeAs-based superconductivity: a case study of the effects of transition metal doping on BaFe2As2 - Condensed Matter > SuperconductivityReport as inadecuate




FeAs-based superconductivity: a case study of the effects of transition metal doping on BaFe2As2 - Condensed Matter > Superconductivity - Download this document for free, or read online. Document in PDF available to download.

Abstract: The recently discovered FeAs-based superconductors are a new, promising setof materials for both technological as well as basic research. They offertransition temperatures as high as 55 K as well as essentially isotropic andextremely large upper, superconducting critical fields in excess of 40 T at 20K. In addition they may well provide insight into exotic superconductivity thatextends beyond just FeAs-based superconductivity, perhaps even shedding lighton the still perplexing CuO-based high-Tc materials. Whereas superconductivitycan be induced in the RFeAsO R = rare earth and AEFe2As2 AE = Ba, Sr, Cafamilies by a number of means, transition metal doping of BaFe2As2, e.g.BaFe1-xTMx2As2, offers the easiest experimental access to a wide set ofmaterials. In this review we present an overview and summary of the effect ofTM doping TM = Co, Ni, Cu, Pd, and Rh on BaFe2As2. The resulting phasediagrams reveal the nature of the interaction between the structural, magneticand superconducting phase transitions in these compounds and delineate a regionof phase space that allows for the stabilization of superconductivity.



Author: Paul C. Canfield, Sergey L. Bud'ko

Source: https://arxiv.org/



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