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Effect of proton irradiation on the normal-state low-energy excitations of Ba(Fe1-xRhx)(2)As-2 superconductors

TitleEffect of proton irradiation on the normal-state low-energy excitations of Ba(Fe1-xRhx)(2)As-2 superconductors
Publication TypeJournal Article
Year of Publication2017
AuthorsMoroni, M, Gozzelino, L, Ghigo, G, Tanatar, MA, Prozorov, R, Canfield, PC, Carretta, P
JournalPhysical Review B
Volume96
Pagination9
Date Published09
Type of ArticleArticle
ISBN Number2469-9950
Accession NumberWOS:000411161700007
Keywordsdefects, physics, temperature
Abstract

le broadening of the NMRspectra was observed in all the irradiated samples at low temperature. The effect is significantly stronger in the optimally doped sample where the Curie Weiss temperature dependence of the line width suggests the onset of ferromagnetic correlations coexisting with superconductivity at the nanoscale. 1/T-2 measurements revealed that the energy barrier characterizing the low energy spin fluctuations of these compounds is enhanced upon proton irradiation, suggesting that the defects are likely slowing down the fluctuations between (0, p) and (p, 0) nematic ground states.

DOI10.1103/PhysRevB.96.094523
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