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Дата последнего поиска статьи во внешних источниках: 18 июля 2013 г.
Аннотация:Current-voltage characteristics of Andreev contacts in LaFeAsO(0.9)F(0.1) have been measured using the break-junction technique. The contacts were prepared at T = 4.2 K from polycrystalline samples and exhibit superconductor / normal conductor / superconductor-type behavior due to multiple Andreev reflections. Two sets of subharmonic gap structures were detected indicating the existence of two distinct superconducting gaps: Δ_Large = 4.5-6.5 meV and Δ_Small = 0.8-1.2 meV.