English (United Kingdom)

https://curated-unify.zendy.io/wp-json/zendy-region/v1/featured_content/oa?rat=en

https://curated-unify.zendy.io/wp-json/zendy-region/v1/highlighted_journal/

Global: Zendy Plus annual

Presents the access of premium content as premium feature

Premium Content

Presents the keyphrase highlighting as premium feature

Keyphrase Highlighting

Presents the summarisation as premium feature

Summarisation

Insights

Presents the pdf analysis as premium feature

PDF Analysis

Presents the zaia usage as premium feature

ZAIA

Global: Zendy Tools annual

Global: Zendy Free Plan

Global: Zendy Tools monthly

Global: Zendy Plus monthly

We report measurements of resistivity, magnetoresistivity, Hall effect,Seebeck coefficient, infrared reflectivity of undoped SmFeAsO and lightly dopedSmFeAs(O0.93F0.07) oxypnictides. All the properties measured on SmFeAsO arecharacterized by clear signatures of the magnetic instability. Aself-consistent picture emerges in which below the magnetic transition carriercondensation occurs due to the opening of spin density wave (SDW) gap. This isaccompanied by the mobility increase of not gapped carriers due to thesuppression of electron-electron scattering. SmFeAs(O0.93F0.07) exhibits anincrease of the metallic character on cooling consistent with electron doping,even though at room temperature values of all the properties nearly overlapswith those of SmFeAsO. However, with temperature decrease all anomalies relatedto the SDW instability are missed and the superconducting transition occurs.This suggests that doping breaks abruptly the symmetries of the Fermi surfaceinhibiting the SDW formation in favor of the superconducting transition, withno substantial changes in the density of states or in the effective mass.

Transport and infrared properties of SmFeAs(O1-xFx): from SDW to superconducting ordering