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Non-conventional superconducting fluctuations in Ba(Fe1-xRhx)(2)As-2 iron-based superconductors

TitleNon-conventional superconducting fluctuations in Ba(Fe1-xRhx)(2)As-2 iron-based superconductors
Publication TypeJournal Article
Year of Publication2014
AuthorsBossoni, L, Romano, L, Canfield, PC, Lascialfari, A
JournalJournal of Physics-Condensed Matter
Date Published10
Type of ArticleArticle
ISBN Number0953-8984
Accession NumberWOS:000343423400010
Keywordsdiamagnetism, fluctuations, iron-based superconductors, magnetization, precursor, superconducting, superconductivity, t-c, yba2cu3o6+x

= 1 kOe) we observed, above the transition temperature T-c, the occurrence of precursor diamagnetism, which is not ascribable to the Ginzburg-Landau theory. On the contrary, our data agree with a phase fluctuation model, which has been used to interpret a similar phenomenology occurring in the high-T-c cuprate superconductors. Additionally, in the presence of strong fields, the unconventional fluctuating diamagnetism is suppressed, whereas Ginzburg-Landau fluctuations are found, in agreement with literature.

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