科研之友
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摘要
The interplay between superconductivity and Eu2+ magnetic moments in EuFe2(As1-xPx)(2) is studied with electrical resistivity measurements under hydrostatic pressure on x = 0.13 and x = 0.18 single crystals. We can map hydrostatic pressure to chemical pressure x and show that superconductivity is confined to a very narrow range 0.18 %26lt;= x %26lt;= 0.23 in the phase diagram, beyond which ferromagnetic (FM) Eu ordering suppresses superconductivity. The change from antiferro- to FM Eu ordering at the latter concentration coincides with a Lifshitz transition and the complete depression of iron magnetic order. DOI: 10.1103/PhysRevB.86.220505
- 出版日期2012-12-19
