Visualization of the Magnetic Flux Structure in Phosphorus-Doped EuFe_2As_2 Single Crystalsстатья
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Дата последнего поиска статьи во внешних источниках: 5 июня 2017 г.
Аннотация:Magnetic flux structure on the surface of EuFe_2(As_0.70P_0.21)_2 single crystals with nearly optimal phosphorus
doping levels and is studied by low-temperature magnetic force microscopy and decoration
with ferromagnetic nanoparticles. The studies are performed in a broad temperature range. It is shown
that the single crystal with in the temperature range between the critical temperatures 22 K
and K of the superconducting and ferromagnetic phase transitions, respectively, has the vortex
structure of a frozen magnetic flux, typical for type-II superconductors. The magnetic domain structure
is observed in the superconducting state below TC. The nature of this structure is discussed.